PROCEEDINGS OF

THE FOURTH INTERNATIONAL CONFERENCE ON SOLID SURFACES(A trienna] Meeting of the International Union for

Vacuum Science, Technique and Applications)

and

THE THIRD EUROPEAN CONFERENCE ON SURFACE SCIENCE(A topical annual Meeting sponsored by the S- "•' I

European Physical Society) v

September 22 - 26, 1980Cannes, France

Guest Editors :

D.A. DegrasCommissariat a l'Energie AtomiqueM. CostaCentre National de la Recherche Scientifique

Host :

SOCIETE FRANCAISE DU VIDE.Paris (F)

Volume 1 (pages 1 a 720)

Universitatsbibl/othek und TIBWeffengarten 1B3000 Hannover 1

Supplement a la Revue «Le Vide, les Couches Minces» n° 201.

TABLE OF CONTENTS

Pre face

Section 1. SURFACE ENERGETICS AND THERMODYNAMICS

Crystal face specificity in surface segregation of CuNi alloys.K. Wandelt 3

Vacancies at Si, Ge and GaAs (100) surfaces.J. Pollmann 7

Vacancy formation energy near transition metal surfaces.G. Allan, J. Wach 11

The basic thermodynamical equations of surface phases.Z. Chvoj , P. Demo 15

Surface segregation kinetics in Cu-Au alloys.W. Losch, J. Kirschner 19

An AES study of the intergranular segregation sulphur in nickeland associated embrittlement.A. Larere, C. Roques-Carmes, P. Dumoulin, M. Guttmann 22

XPS and AES study of surface segregation in clean oxygen andhydrogen-covered Pt-Ni alloys.J. Sedlacek, L. Hilaire, P. Legare, G. Maire 26

Surface minimization calculations on silicon surfaces.J.W.T. Ridgway, M.S. Sheela 30

Orientation dependence of the surface segregation on Sn on Cu.S. Hofmann, J. Erlewein 34

Calculation of the composition of the surface layers and of thesurface free energy of mixtures. General theory and approximatemethod for binary alloys.L.Z. Mezey, J. Giber 38

UHV-SEM studies Stranski-Krastanov growth systems.J.A. Venables, P. Akhter, J. Derrien 42

Total emissivity measurements of metals and coatings at lowtemperatures.D.- Giulietti, A. Gozzini, M. Lucchesi, R. Stampacchia 46

Elastic interaction of a point defect with a stressed surface.R.F. Wallis, A.A. Maradudin, L. Dobrzynski, B. Djafari-Rouhani...... 50

A molecular-dynamics study of self-diffusion on rare-gases (100),(110) and (111) surfaces.G. de Lorenzi, V. Pontikis, J. Jacucci 54

Section 2. SURFACE DIFFUSION

Reconstruction movement of surface atoms of In/Si (111) system.S. Baba, J.M. Zhou, A. Kinbara 61

XI

Comparison of anisotropy in grain boundary segregation incopper-bismuth and iron base systems.C. Molinari, J.C. Joud 65

Influence of steps on the surface self-diffusion of copper.J. Cousty, B. Perraillon 69

On the influence of steps on adatom and surface-vacancy diffusion:a molecular dynamics investigation.J. Cousty, V. Pontikis 73

The influence of atomic steps on Ni surfaces self-diffusioncoefficient D .J. Jaunet, C. Waldburger, J. Philibert. 77

Section 3. PHYSICAL ADSORPTION

Surface interactions of a semiconductor inversion layer and VanDer Waals adsorption energy.N.J.M. Horing, S. Silverman 83

Semiempirical rules for gas-surface potential parameters.H. Hoinkes, H. Wilsch 87

The adsorption of neon, helium and hydrogen gas on a number ofsolid surfaces at temperatures below 25 K.M.J. Sparnaay, A. Reijnders-Coenen 91

Deformation of an elastic substrate upon adsorption near thecommensurate-incommensurate transition.R. Beaume, J; Suzanne. 95

Commensurate-incommensurate phase transition and diffusion inmonolayers.L.A. Bolshov, A.M. Dykhne, M.S. Veschunov 96

Specific heat study of two dimensional adsorbed 0« or graphiteand magnetic properties of 0« monolayers.R. Marx, R. Braun 10°

The influence of surface - defects on the adsorption of xenonon metal surfaces.K. Wandelt, J. Hulse, J. Kiippers, G. Ertl 104

Xenon adsorption on pretreated Pd (110) surface.J. Hulse, J. Kiippers, K. Wandelt, G. Ertl 108

Commensurate-incommensurate phase transition in Kr-monolayersadsorbed on graphite.J. Bohr, M. Nielsen, J. Als-Nielsen 112

A new method to study physisorption using surface acoustic wave.J. Pouliquen, M. Depoorter, A. Defebvre 116

Two solid phases of a monolayer of C^H- adsorbed on graphite.P. Thorel, C. Marti, G. Bomchil, J.M. Alloneau 119

XII

Structure of a monolayer of CF, on graphite.B. Croset, J. Lauter, C. Marti, P. Thorel 122

Neutron diffraction study of ethane films adsorbed on graphite.J.P. Biberian, J.P. Coulomb, J. Suzanne, G.J. Trott, H. Taub,F.Y. Hansen, H.R. Danner. 126

On dipole moments of physisorbed atoms.J.P. Sunnen, M. Schmeits. 130

Band structure calculations for hexagonal.K. Hermann, J. Noffke 134

Section 4. THEORETICAL CHEMISORPTION

Spatial distribution of hydrogen1 molecules desorbed from transi-tion metal surfaces.T. Toya, Y. Ohno, S. Ishi, S. Nagai 141

Quantum mechanical description of angular and energy distributionof desorbing particules.G. Doyen 145

Adsorption in external positive electric field.K.F. Wojciechowski. 149

Calculations of core ionization potentials, shake-up energiesand intensities for chemisorbed CO and for carbonyls.D.R. Salahub, R.P. Messmer, S.H. Lamson 152

Molecular chemisorption on simple metal surfaces.P.K. Jonhansson 156

Calculation of valence electron energy bands for thin films andlayered structures by a pseudopotential perturbation scheme.J. Sitte 160

Response function of metal overlayers.J.P. Ganachaud, D. Spanjaard 164

Aspects of reaction dynamics at metal surfaces.J.W. Gadzuk, M. Metio 168

One-step description of XPS and Auger spectra.0. Gunnarsson, K. SchSnharamer 172

Chemisorption of oxygen atoms on zinc (0001) surface by DV-Xctcluster calculations.E. Miyazaki, M. Tsukada, H. Adachi 176

Na adsorption on Al (100) : a cluster model analysis of electronicrelaxation.R. Hoogewijs, G. Dalmai, J. Vennik , 180

The surface molecule picture revisited.J. Lopez, J.C. Le Bosse, J. Rousseau-Violet 184

XIII

Method for calculating the electronic structure of heterogeneousmetal-metal interface and superconductivity.Zhang Li-Yuan, Yin Dao-Io 188

Local densities of states for metals covered with layers ofdifferent symmetry.S.Z. Vlaev, I.Z. Kostadinov, T.S. Marinova. 192

Energy level shifts of ammoniac adsorbed on iron surfaces :cluster models.K. Hermann 196

Section 5 . EXPERIMENTAL CHEMISORPTION

Interactions in chemisorbed phases.G. Er t l 203

Bonding geometry of CO on planar and stepped single crystalsurfaces.T.E. Madey, J.E. Houston, S.C. Dahlberg 205

Room temperature adsorption of CO on clean and carbided Ni (100)surface.J.C. Bertolini, B. Tardy. 209

Interaction of HNCO with Cu/111/surface.F. Solymosi, J. Kiss, A. Berko. 213

The adsorption of oxygen on a cylindrical tungsten single crystal.H.M. Kramer, E. Langer, E. Bauer 217

Adsorption and dissociation of nitric oxide on Ni (111).S. Lehwald, J.T. Yates, Jr., H. Ibach. 221

The reactions of oxygen, sulphur, selenium and tellurium withtantalum surfaces.P.O'Callaghan 225

A LEED/Auger study of the monolayer growth of Co on Cu (100) andits oxidation.L. Gonzalez, R. Miranda, M. Salmeron. 229

Effect of temperature on the adsorption of gold on the (100)tungsten single crystal plane.J. Polanski, Z. Sidorski, S. Zuber 233

Nitrogen chemisorption on W (001) : structure and kineticprocesses.K. Griffiths, D.A. King _ 237

Chemisorption and epitaxial growth : a study of the adsorptionof chlorine on chromium and chromium oxide single crystal surfa-ces .J.S. Foord, R.M. Lambert 242

XIV

Faces specifity of the carbon monoxide adsorption on colbaltsingle crystals.H. Papp 245

Adsorption of 0~ and C.H, on silver single crystal surfacesstudied by ELS and TPD.C. Backx, C.P.M. De Groot, P. Biloen 248

Distinct "slow" and "fast" velocity distributions in the D.desorption flux from Pd (100).G. Comsa, R. David, B.J. Schumacher ,. 252

Reaction of O_, NO and H,,0 with gallium surfaces and matrix-isolated clusters and atoms.D. Schmeisser, K. Jacobi, D.M. Kolb 256

N-0 adsorption on the close-packed faces of Ni, Ru and W. Acomparison.D. Menzel, E. Urabach 260

Oxygen i n t e r a c t i o n with Cu (110) s tudied by AES, ELS, UPS andwork function changes.C. Benndorf, A. Hohlfeld, C. Nobl, F . Thieme 263

UHV-TEM i n v e s t i g a t i o n of monolayer of lead on the s i l v e r (111)s u r f a c e .K. Takayanagi, G. Honjo 267

Adsorption studies using Auger electron spectroscopy from cylin-drical single crystals.A.F. Armitage, D.P. Woodruff 271

Interaction of oxygen with Ni (100) at low temperature. Compari-son to room temperature.H. Hopster, C.R. Brundle. 275

A comparative study of the electron back-donation properties ofthe group VIII metals in the adsorption of molecular CO and N~.B.E. Nieuwenhuys. 279

AES, SES, ELS and SIMS characterization of chemisorbed oxygenlayers and oxide films on Ni/2% Cr (110) crystal. Modificationof these films by ion bombardment.J.C. Pivin, F. Pellerin, C. Roques-Carmes, C. Le Gressus 283

The structures of CO, CO. and small hydrocarbon molecules(acetylene, ethylene, propylene, methylacetylene) adsorbed onRh (111) and Pt (111) studied by LEED and HREELS.M.A. van Hove, L.H. Dubois, R.J. Koestner, G.A. Somorjai. 287

Adsorption of water on metal films. Influence of surface topogra-phy on the work function changes.J.M. Heras, E. Albano 291

Carbon monoxide adsorption on Ni (110) studied by infraredellipsometric spectroscopy.P.R. Mahaffy, M.J. Dignam 295

XV

On the structure of sulphur adsorbed on (110) nickel face.C. Koziol, S. Mroz 299

The adsorption of N? on W (100) under long exposure.H.F. Winters, P. Morgen, S. Tougaard, J. Onsgaard 303

The adsorption of water on Ru (001) : vibrational and geometricproperties.P.A. Thiel, F.M. Hoffmann, W.H. Weinberg 307

LEED intensities for arroy of ordered islands.E.D. Williams, W.H. Weinberg 3]]

Desorption of F and Cl from (100), (110), (111) Nb surfaces.G. Bolbach, J.C. Blais, A. Brunot, A. Marilier 314

Chemisorption of nitric oxide on metal surfaces.H. Miki, T. Kioka, K. Kawasaki 317

Sulphur chemisorption on the silver (111) and (100) faces.G. Rovida, F. Pratesi. 32]

Iodine chemisorption on the silver (111), (100) and (110) faces.U. Bardi, G. Rovida 325

Benzene adsorption at room temperature on Re (0001) studied byAES, LEED and TPD.S. Tatarenko, R. Ducros 329

Electron stimulated desorption : relationship between thresholdenergies and electronic transitions in the adsorbed complex.J. Rubio, J.M. Lopez Sancho, M.P. Lopez Sancho 332

An Ir and EELS study of the adsorption of CO on Pd (100).A. Ortega, F.M. Hoffmann, W. Stenzel, A. Garbout, R. Unwin, K. Horn. 335

Surface photovoltage spectroscopy of selective Cs-adsorption onthe (0001) CdSe surface.E. Monard, H. van Hove, A. Neyens 33g

CO adsorption on (111) Cu-Ni surfaces studied by AES, ELS, UPS,LEED, TDS and work function measurement.K. Besenthal, H. Erhart, W. Kirstein, F. Thieme. 345

Structure and electronic properties of the Cu (lll)/Na adsorptionsystem.S.A. Lindgren, L. Wallden. 349

Chemisorption of oxygen and initial oxidation of Ni : a correlationof gravimetric measurements and 0(KLL) Auger intensity.C. Benndorf, C. Nobl, H. Seidel, F. Thieme 353

Chemisorption of carbon monoxide on rhodium single crystalsurfaces.G. Borstel, M. Neuman, G. Seitz, W. Braun. -t>i 357

XVI

Desorption of cesium from molybdenum (111); positive ionand neutral lifetime measurements.R. Klein, J. Fine 361

LEED intensity analysis of the Ag(OOl) c(2x2) - I structure.E. Zanazzi, M. Maglietta, U. Bardi, M. Torrini 365

Thermodynamics of oxygen vacancy defects on thin film ZnO surfa-ces as measured by electrical conductivity.W. Seehausen, W. Gopel, R. Haul, U. Lampe 366

Study of 0, and SO^ adsorption kinetics on Fe single crystalsurfaces.M. Schmidt, W. Katzel, K. Berndt, F. Storbeck 370

Adsorption of C?H, on tungsten by ESD and TDS.

C. Refolio, J.M. Lopez Sancho 376

Section 6. SURFACE REACTIONS

Basic studies of surface reactivity and elementary catalytic

processes on well-characterized metal surfaces.R.M. Lambert 381Catalytic oxidation of CO on Pt (111) : a study by XPS, UPS anddynamic high resolution measurements of work function.P.R. Norton, D.K. Creber, J.W. Goodale 390

Decomposition of NO on clean Pt at high pressures.M. Mummy, L.D. Schmidt 394

Adsorption of cyanogen on rubidium dosed silver (111).N.D. Spencer. 395

Growth of platinum on rhenium - Interactions of oxygen with thissurface.B. Weber, G. Praline, M. Alnot, J.J. Ehrhardt, A. Cassuto 399

Molecular beam study of the catalytic reaction between NO andCO on Pt (001).S.P. Singh-Bopari, D.A. King 403

Structure and reactivity of Pd low-index crystal faces coveredwith Pb deposits.W. Palcewska, I. Szymerska, I. Ratajczyjowa, M. Lipski 407

The formation and hydrogenation of carbonaceous layers on iron.H.P. Bonzel, H.J. Krebs 411

Ion bombardment induced variation in reactivity of several gas-metal systems.R. Miranda, J.M. Rojo, M. Salmeron, J. Ibanez 415

Deactivation of metal catalysts by chemisorbed species in equi-librium with the gaseous reactants.A. Frennet, G. Lienard, A. Crucq, L. Degols 419

XVII

Reactivity of lead monolayers on copper : evidence for oxygenspill-over.D. Chadwick, A.B. Christie 423

Determination of surface structures with ion beams.N. Winograd , S.P. Holland, K.E. Foley, R.A. Gibbs 427

The interaction of oxygen with Zn doped SnO. p (1x2) (110) face.E. de Fresart, J. Darville, J.M. Gilles 431

Kinetics of the catalytic CO-oxidation on ZnO.P. Esser, R. Feierabend, W. Gopel 436

Charge-transfered states of H 2 and CO on ZnO and their reactions.M. Watanabe, T. Ito 440

The oxidation of hydrogen and carbon monoxide on Ir (111).V.N. Ageev 444

The oxidation of C_ hydrocarbons on Ag (110).M.A. Barteau, R.J. Madix 448

The early stages of oxidation of magnesium, aluminium andmagnesium/aluminium alloys.B.E. Hayden, D.F. Klemperer, G.C. Allen, P.M. Tucker 453

The conversion process of ethylene on Pt (111).A.M. Baro, H. Ibach 458

Interaction of oxygen and water with erbium surfaces : Auger andelectron energy loss spectroscopy.E. Bertel, F.P. Netzer 462

Sulphur-oxygen opposition at the surface of iron, chromium andstainless steel studied by electron spectroscopy.C. Jardin, Bui Minn Due, J.P. Gauthier, G. Thollet, P. Michel 466

Oxidation of crystalline magnesium (0001) studied by ELS, AES,LEED and work function measurements.H. Namba, J. Darville, J.M. Gilles 470

Influence of potassium on the oxygen chemistry of silver surfa-ces : oxides and superoxides on Ag (100).M. Kitson, R.M. Lambert 474

The dissociation and solution of carbon monoxide at the Mo (100)surface.R.A. Armstrong 478

Catalytic reactions on metal surfaces studied by surface potentialmeasurements.I. Lundstrom, D. Soderberg 482

Infrared chemiluminescence from reactions at metal and semi-conductor surfaces.T.J. Chuang 486

XVIII

Isomerization of C, hydrocarbons on low and high index faces ofplatinum.G. Maire, F. Garin 490

Kinetics of H-S adsorption onto Fe films.M.R. Shanabarger 494

The reaction between hydrogen and adsorbed oxygen on Cu (110).S. Hachicha, P. Hofmann, A.M. Bradshaw 498

Interaction of oxygen with alkali covered Ni (100).G.M. Bliznakov, L.N. Surnev, M.P. Kiskinova 502

Electron induced dissociation of lead iodide surfaces.A. Friedenberg, Y. Shapira 506

Analysis by AES, XPS and UPS of the incorporation of oxygen inPt (111) single crystal.A. Slavin, J. Fusy, J. Jupille, M. Alnot, J.J. Ehrhardt, A.Cassuto 509

The influence of carbon monoxide on hydrogen sorption on Pd (111). -I. Ratajczykowa 513

Coadsorption of hydrogen and carbon monoxide on nickel.M. Abon, B. Tardy 517

The adsorption of n atoms Pt (110) and Cu (111) surfaces.J. Kiss, A. Berko, F. Solymosi 521

A study of the interaction between ethylene and deuterium onNi (111) by SIMS.D.J. Surman, J.C. Vickerman, J. Wolstenholms. 525

Infrared analysis of the chemisorbed phases during a heterogeneouscatalytic reaction. Study of the adsorption of CO in the fisher-tropsch synthesis on Fe/Al»0,.H. Batis-Landlonsi, D. Biancni, C O . Bennett, G.M. Pajonk,S.J. Teichner 529

Platinum films on alumina as model catalysis for size effectsin catalysis.H. Glassl, R. Kramer, K. Hayek 533

"Bronze-like" compounds identified during oxidation on welldefined Pt surfaces doped with Ca : a LEED, AES, ELS and XPSs tudy.G. Lindauer, P. Legare, G. Maire 537

The characterization of intermediates in surface reactions :the methoxy and formate species on Cu (100).P. Hofmann, K. Horn, A.M. Bradshaw. 541

Isotopic exchange of molecular oxygen with the surface oxygenof ferric molybdate.D.G. Klissurski, M.M. Kancheva 545

XIX

Propagation of a reaction on a catalyst surface. Measure of thepropagation speed.J.P. Dauchot, T. Bertonil 548

The initial oxidation of polycrystalline niobium as studied byelectron spectroscopy.S.J. Bean, D.C. Chadwick. 551

Decomposition of nitrous oxide on copper single crystal surfaces.F.H.P.M. Habraken, G.A. Bootsma. 555

An XPS study of the selective oxidation of a NiCr alloy.A. Mosser, J. Werckmann 559

On the high temperature oxidation of crystals of the Fe. g2Cro 18

alloy surfaces.P.J. Moller, F.F. Pedersen. 563

Section 7. SOLID - LIQUID INTERFACES

Early stages of Pb condensation on Ag (111) studied in ultrahigh vacuum and in an electrochemical cell.K. Takayanagi, D.M. Kolb, G. Lehmpfuhl, K. Kambe 569

A simple method for the preparation of Pt single crystal electro-des used in electrochemical measurements.R. Faure, R. Durand. 573

Investigation of the role of the superficial structure of goldon the charge transfer mechanism by the electrochemical photo-emission method.G. Picq, P. Vennereau 577

Modulated reflectance spectroscopy for the study of the firststeps of oxidation.L. Arsov, G. Blondeau, M. Froelicher, A. Hugot-Le Goff,V. Jovancicevic 581

Surface equilibrium in binary solid solution : typical behaviourof very slightly soluble elements.A. Rolland, F. Cabane-Brouty. 585

Use of new techniques to investigate electrocrystallizationprocesses.J. Vereecken 589

Adsorption on gold crystal faces in aqueous solutions.A. Hamelin, J.P. Bellier 594

New phenomena at the Si-water electrolyte interface.E.V. Buzaneva 598

Dielectric constants of thin metallic films adsorbed or depositedon gold electrodes.F. Chao, M. Costa. 602

XX

An electrochemical method for studying the structure and thecomposition of interfaces in solid.L. Beaunier, M. Froment, C. Vignaud. 606

Electrochemical behaviour of silver single crystal surfacescovered with a rnonolayer adsorbed of sulphur.C. Nguyen van Huong, R. Parsons, P. Marcus, J. Oudar 610

The study of the electrode-electrolyte interface by surfaceplasmon excitation.A. Tadjeddine, D.M. Kolb. ; 614

Study of the SiO.-electrolyte interface by capacitance andconductance measurements on Si-SiO.-electrolyte structures.A. Prolonge, G. Kamarinos, P. Gentil 619

The various electrochemical states of Pt (111) surface charac-terized by LEED and AES.R. Durand, R. Faure, G. Guinet, D. Aberdam, C. Corotte,D. Dufayard. ., 622

Electrooptical effects in the double layer region at the metal-aqueous electrolyte interface.R. Kofman, R. Garrigos, P. Cheyssac. 6 2 6

Spectroscopic investigation of the adsorbed water layer on goldand silver single crystals at metal-solution interfaces.C. Hinnen, R. Parsons 630

Surface states and the process for electrochemical transfer atthe n-Si electrolyte junction.J.N. Chazalviel 634

Electropolymerized thin films on metallic surfaces.G. Lecayon, A. Le Moel, C. Le Gressus. g g

Section 8. ATOMIC STRUCTURE

Solid surface atomic structure.J. Oudar 645

Investigation of the relaxation and adsorption-induced phasetransition of a Pt (100) surface by MeV ion backscattering,nuclear microanalysis, LEED and XPS.P.R. Norton, J.A. Davies, D.P. Jackson, C. Sitter, D.K. Creber. -559

Modulation and partial order in 2D structures/diffraction andcrystallographic aspects.M. Huber 663

Surface atomic geometry determinations from core-level X-rayphotoelectron angular distributions. .C.S. Fadley, S. Kono, J.T. Lloyd, K. Thompson. 6 6 5

Spectroscopy Auger study of Stranski-Krastanov growth mode inthe case of Au (110) Mo.E. Gillet, B. Gruzza 669

XXI

Structure study of Au-deposited Si (100) surface by MeV ionscattering.T. Narusawa, K. Kinoshita, W.M. Gibson 673

A LEED analysis of the Sc (0001) surface.S. Tougaard, A. Ignatiev 677

Reconstruction and dynamics of the W (100) and Mo (100) and Cr(100) surfaces.A. Fasolino, G. Santoro, E. Tosatti 679

Electron microscope study of reconstructed (111) gold surface.Y. Tanishiro, H. Kanamori, K. Takayanagi, K. Kobayashi,K. Yagi, G. Hongo 683

A computer experiment on the constant momentum transfer average(CMTA) method for surface structure determination by LEED.E. Zanazzi, M. Torrini 687

A new experimental approach for the study of the formation andadsorption properties of small metal particles.C. Papageorgopoulos, H. Poppa 688

Formation of Pb-clusters in He-atmosphere.J. Muhlbach, E. Recknagel, K. Sattler 692

Study of the earliest film growth stages by ellipsometry.K. Kinosita, M. Yamamoto, T. Goroh, S. Hirasawa, Y. Tomohiro,S. Kawabata 696

Ordered aluminum overlayers on Si (111) : structure, bondingand driving mechanism for surface reconstructions.R.H. Williams, A.W. Parke, R.S. Bauer, G.V. Hansson, D.J. Chadi. .... 699

Determination of interatomic distances at solid surfaces withISS; a study of stepped Cu (410).A.J. Algra, S.B. Luitjens, E.P.Th. M. Suurmeijer, A.L. Boers., 703

Surface composition and electronic structure of Ag-Pd singlecrystal alloys.M. Pessa, H. Asonen, M. Lindroos, B.L. Gyorffy, W. Temmermann,A.J. Pindor. 707

LEED analysis of the interaction of Al with the GaAs (110)surface.A. Kahn, P. Mark. 711

Non equilibrium compound formation by pulsed electron beamannealing.G. Majni, F. Nava, G. Ottaviani, A. Luches, U. Nassisi, E. Galli... 715

Section 9. SURFACE VIBRATIONAL PROPERTIES

Surface vibrational properties : recent advances.R.F. Willis 723

Lattice vibrations at real interfaces.G. Benedek, V.R. Velasco 738

XXII

Contribution to the study of the vibrational properties of afilm-substrate interface.P. Masri 742

Inelastic neutron spectrum of acetylene chemisorbed on Raneynickel.H. Jobic, A. Renouprez 746

Vibrational spectroscopic studies of chemisorbed species onmetal surfaces.J.T. Yates, R.R. Cavanagh 750

Brillouin scattering from interface acoustic phonons.J.R. Sandercock, F. Nizzoli, V. Bortolani, G. Santoro,A.M. Marvin 754

Infrared absorption spectrum of unequal size spherical clustersin powders.M. Ausloos, P. Clippe, J.M. Gerardy 758

Optical surface phonons observed by electron energy lossspectroscopy on GaAs.R. Matz, H. Luth 762

Brillouin spectra from the interface of two media.E.L. Albuquerque 766

Surface enhanced Raman scattering in ultrahigh vacuum.J.E. Rowe, D.A. Zwemer, C.V. Shank, C.A. Murray 770

Acoustic waves in a sandwich ABC.V.R. Velasco, B. Djafari-Rouhani, L. Dobrzynski, F. Garcia-Moliner • 774

Investigations at metal-vacuum interfaces by Raman spectroscopy.I. Pockrand, A. Otto 778

Enhanced Raman effect of adsorbates on metal electrodes causedby adatoms.J. Billmann, J. Timper, A. Otto, I. Pockrand 782

Enhanced Raman scattering by pyridine physisorbed on cleanmetal surfaces in ultra high vacuum.R.R. Smardzewski, R.J. Colton, H.D. Ladouceur, R.L. Mowery. 786

Isotopic effects of CO adsorbed on Cu (100) studied by infraredspectroscopy.B.N.J. Persson, R. Ryberg 790

Vibration spectra of oxygen and sulphur atoms chemisorbed onnickel surfaces.G. Allan, J. Lopez. 794

Section 10. ATOMIC AND MOLECULAR BEAM SCATTERING

Structural and kinetic investigations with atomic and molecularbeams.

T. Engel, K.H. Rieder 801

XXIII

Scattering of atoms from adsorbates.A.C. Levi, R. Spadacini, G.E. Tommei 812

Selective adsorption resonances in He beam diffraction fromNi (110)+(lx2)H.J.M. Soler, V. Celli, N. Garcia, K.H. Rieder, T. Engel 815

Observability of zone-boundary surface phonons in atom scatte-ring time-of-flight spectra.G. Benedek, N. Garcia 818

Investigation of quasi-elastic fractions in atomic beamscattering.H. Wilsch, L. Greiner, H. Hoinkes, H. Kaarmann, R. Meckler 822

The diffraction of helium from an ordered adsorbed layer :oxygen on (110) copper.J. Lapujoulade, Y. Le Cruer, M. Lefort, Y. Lejay, E. Maurel. ... 826

Selective adsorption in inelastic scattering of He graphite.P. Cantini, R. Tatarek 830

A molecular beam study of adsorption-desorption kinetics on astepped platinum surface.B. Poelsema, G. Mechtersheimer, G. Comsa 834

Inelastic scattering- of Ne from the (001) surface of LiF byToF measurements.L. Mattera, P. Pastorino, C. Salvo, S. Terreni, F. Tommasini,U. Valbusa 838

High resolution inelastic scattering of He atoms from a LiF(OOl)surface.G. Brusdeylins R.B. Doak, J.P. Toennies 842

Surface rainbow structure in the wide range angular distributionsfor Li + W (110) scattering, influence of the azimuth andof ordered adsorbates.E. Hulpke, K. Mann 846

H formation for grazing incoming hydrogen on a cesiatedtungsten (110) surface.J.N.M. Van Wunnik, B. Rasser, J. Los. 849

The smoothing effect of electron density on metal surfaces inmolecular beam scattering.Y. Ohno, S. Ishi, S. Nagai, T. Toya 853

Scattering of neutral particles by a surface. A comparisonbetween hard and exponential corrugated potentials.G. Armand, J. Lapujoulade, Y. Lejay 857

He diffraction from Au (110).K.H. Rieder, T. Engel 861

The effect of irreversible electronic polarization on stickingprocesses at metallic surfaces.Z. Erljen.B. Gumhalter 865

Theoretical model for calculation of molecular drag on tangen-tial ly moving rough surfaces.J.K. Fremerey 869

Inelastic scattering of H^ molecules from LiF : optical surfacephonons.W. Allison, B. Feuerbacher. 373

Section 11. SURFACE ELECTRONIC PROPERTIES

Interpretation of band structures of ordered adlayers.K. Kambe 879

Shockley surface states of NbC.M. Tomasek, L. Sroubkova, J. Heyrovsky 883

Ionic binding energies on inhomogeneous surfaces.J. Magil, K.A. Long, M.S.S. Brooks, R.W. Ohse 887

Theory of light scattering by surface polaritons in gyrotropicmedia.A.A. Maradudin, R.F. Wallis 891

Surface polariton spectroscopy as a method to study the structureof the interface.V.G. Litovchenko, N.L. Dmitruk 895

Theory of parametric excitation of surface waves by laserradiation in narrow-gap semiconductors.Vo Hong Anh 899

Local field effects on optical properties of crystal surfaces.R. del Sole, E. Fiorino 903

Variational calculation of the surface state energy distributions.M. Steslicka, K. Kempa. 907

Influence of phonons on the existence of intermediate electronicstates of solids.G. Biczo 910

An investigation of surface and interface states on semiconductorsby photoluminescence.R.H. Williams, R.A. Street 914

Surface plasmon damping in high magnetic field.G. Rafanelli, N.J.M. Horing 918

Atomic number background dependence in Auger electron spectro-scopy.J.P. Duraud, C. Le Gressus, D. Massignon, S. Ichimura 922

Theoretical and experimental studies of the interface statesin metal-thin insulator-semiconductor systems.V.I. Strikha 926

The structural characteristics of some allotropes of carbonusing surface secondary electron emission spectroscopy.H.G. Maguire 929

An investigation of the reflection of low energy electrons fromthe surfaces of layered transition metal dichalcogenides.A.E. Smith, M.H. Mohammed, T. Wohlenberg, E. Johnson, L.T.Chadderton, P.J. Moller 933

Section 12. SEMICONDUCTOR SURFACES AND INTERFACES

Theory of the effect of a DC current, including the electronthermal pressure gradient, on surface polaritons in n-typesilicon.B.G. Martin, J.J. Quinn, R.F. Wallis 939

Ion beam crystallography of the reconstructed and hydrogenstabilized Si (100) surface.R.M. Tromp, R.G. Smeenk, F.W. Saris 943

ELS studies of the elemental and chemical composition of Si andGaP surfaces.P.V. Melnik, N.G. Nakhodkin, A.F. Koval, S.N. Gojsa 947

Silver and gold silicon interfaces.A. Cros, J. Derrien, F. Salvan, J.P. Gaspard 951

Adsorption kinetics of bismuth on Si (110) surfaces.T. Oyama, S. Ohi, A. Kawazu, G. Tominaga 955

Evidence of intermixing at Si (lll)-Pd interface at liquidnitrogen temperature.I. Abbati, L. Braicovich, U. del Pennino, B. de Michelis 959

Effect of Ag impurities on the electronic properties on the Si(111) surface.D. Bolmont, C. Sebenne, Chen Ping 963

Structural and electronic properties of atomic hydrogen oncleaved silicon (111).G. Schulze, M. Henzler 967

Ultraviolet photoemission, Auger and Rutherford backscatteringinvestigation of ion-implanted amorphous silicon.G. Peto, J. Kansky, T. Lohner. 971

Interface bands and layer-densities of states of (110) Ge-GaAsheterostructures.A. Mazur, J. Pollmann, M. Schmeits 975

The adsorption of oxygen on the GaAs (110) surface.I. Lindau, C.Y. Su, P.R. Skeath, W.E. Spicer 979

Simultaneous measurement of electron energy spectra and RHEEDpatterns for oxygen and nickel covered silicon (111) surfaces.Y. Ishrkawa, N. Awaya, T. Ichinikawa, C. Le Gressus, D. Massignon. .. 983

XXVI

Surface structure of Si (111) - /3x/3-Ag as studied by lowenergy ion scattering spectroscopy.T. Hanawa, M. Saito, F. Shoji, K. Oura 987

Capacitance of metal semiconductor contacts on clean polar ZnOfaces.J. Lux, D. Kohl, 3. Heiland 991

Surface states and charge transfer on semiconductors : chemisorp-tion on ZnO (1010) for different dopings.W. Gopel, H.C. Langowski 995

Profiling of electron beam damage in hydrogenated amorphoussilicon by a combination of scanning Auger microscopy andsputter-etching.H. Shade 999

Surface photovoltage, band-bending and surface states on a-Si :H.B. Goldstein, D. Szostak 1003

Reflection electron microscope study of Au and Ag deposited (111)and (001)Si surfaces.G. Honjo, N. Osakabe, Y. Tanishiro, K. Yagi 1007

Intrinsic point defects of semiconductor surfaces : studies onthe "phototype system" ZnO (1010).U. Lampe, W. Gopel 1011

Adsorption of Ga atoms on Si (111) surfaces.A. Kawazu, K. Akimoto, T. Oyama, G. Tominaga 1015

Impact energy dependence of secondary ion yields from boron-dopedsilicon bombarded with atomic and molecular oxygen ions.K. Wittmaack 1019

Photoelectron spectroscopy of Si (lll)-Pt interfaces.I. Abbati, L. Braicovich, B. de Michelis, M. Sancrotti. 1023

On the growth mechanism of Si (lll)-Ni interface.I. Abbati, L. Braicovich, U. del Pennino, B. de Michelis,S. Valeri 1°26

The interaction of silicon and silane with a Pd (100) surface.K. Christmann, J.E. Demuth 1029

The Si (Ill)/l9x/l9 and 7x7 surface structures.

G.V. Hansson, R.Z. Bachrach, R.S. Bauer, D.J. Chadi, P. Chiaradia. . 1033

Section 13. SURFACE MAGNETIC PROPERTIES

A theory of surface nuclear spin waves in antiferromagnets.E.F. Sarmento, 0.R. Tilley, B. Zeks 1037Magnetic anisotropies of ferromagnetic surfaces : ferromagneticresonance studies on Ni-and Fe-films.W. Gopel, B. Kuhnemann, B. Wiechmann 1040

XXVII

Pleed magnetic surface structure studies at SLAC.R.E. Kirby, E.L. Garwin, Sheng-Wei Wang 1044

Surface magnetization in Ni (110) as studied by polarizedelectron scattering.R.J. Celotta, D.T. Pierce, G.C. Wang, S.D. Bader, G.P. Felcher... 1045

The theoretical study on the surface of the superconductingparticles.Han Ru-shan, Liu Fu-sui, Zhao Zhong-xian 1049

Surface effects on superconducting magnetic properties.I. Kirschner, J. Bankuti, K. Martinas, G. Kiss, L. Laszloffy 1052

Magnetization curves of surfaces measured by spin polarizedphotoemission.D. Pescia, M. Erbudak, F. Meier, 0. Vogt 1056

Spin polarized electron scattering studies of W (100).D.T. Pierce, R.J. Celotta, G.C. Wang 1060

Detection of superparamagnetic iron precipitations on the surfaceof FeTi by means of spin polarized photoemission.A. Seiler, P. Zurcher, M. Landolt, L. Schlapbach 1064

Section 14. INSTRUMENTATION AND METHODS FOR SURFACE STUDIES

Thin films and interface characterization by ellipsometry.B. Theeten 1071

Electron impact ionization cross-sections measured by Augerelectron spectroscopy.P. Staib, G. Staudemaier, K. Goto 1081

The charge state of the ions produced by a saddle field ionsource and its application to the measurement of sputtering yields.R.K. Fitch, E.A. Mahmoud, S.N. Ghafouri 1085

Angular-confinement of W (100) field emitters.S. Hosoki, S. Yamamoto, Y. Hirai, S. Kawase 1089

Surface studies of materials for superconducting cavities.E.L. Garwin, R.E. Kirby, T. Momose, E.W. Hoyt 1092

A chemical polishing and vacuum annealing procedures to obtainclean GaAs surfaces.A. Munoz-Yague, J . Piqueras, N. Fabre 1096

High sensitivity LEED analysis for clean metallic surfaces.J.R. Nooman, H.L. Davis 1100

Analysis of temperature effects in spin-polarized low-energyelectron diffraction.J . Kirschner, R. Feder. 1104

A new hybride electron-ion gun for surface analytical instrumen-tation.E.B. Bas, E. Gisler 1108

XXVIII

Some random movement model of electron backscattering from solidtarget.A. Mulak 1112

New automatic measurement of the local work function variationsusing a retarding field method.M. Babout, M. Guivarch, C. Guittard 1116

A novel momentum-resolving multichanneling electron and ionspectrometer.H.A. Engelhardt, W. Back, D. Menzel, A. Zartner 1119

A sensitive isotope ratio method for identifying ion implantationprofiles.W.H. Gries 1122

A comparison of adsorbate-induced function changes measured withthe vibrating capacitor and the photoelectric effect.B. Hayden, S. Hachicha, A.M. Bradshaw 1125

About the possibilities of the Kelvin method.J. Bonnet, J.M. Palau, E. Testemale, L. Soonckindt, L. Lassabatere.. 1129

LEED intensity measurements on MgO (100).W. Berndt 1133

GaAs-Ag diode properties related to surface work function.J.M. Palau, E. Testemale, L. Lassabatere 1137

Oxygen effect on GaSb cleaved surface work function topographies.

J. Bonnet, L. Soonckindt, L. Lassabatere 1141

Section 15. UPS AND SOFT XPS

Photoemission and the electronic structure of a c(2x2) sulphur

adsorbate layer on PD.R. Hora, M. Scheffler 1147Photoemission from oriented atoms.I. Bartos, F. Maca 1151

Analysis of the vector properties of the optical transitionmatrix element in photoemission from solids.S. Holloway, J.K. Sass 1154

Angular resolved photoemission studies of CO chemisorbed on Ni (100),(110) and (111).C. Guillot, Y. Jugnet, Y. Lassailly, D. Chandesris, J. Lecante,J.C. Vedrine 1158

W(lll) surface : experimental and theoretical photoemission study.F. Cerrina, J. Anderson, G.P. Williams, G.J. Lapeyre, 0. Bisi,C. Calandra 1162

XXIX

Surface and volume photoemission yields from Al films sustainingsurface plasma waves.G. Hincelin, A. Septier 1166

Angle-resolved UPS spectra from iron (110) and for adsorbedxenon.K.C. Prince, C. Klauber, B.G. Baker 1170

Electronic band structure and photoemission of the surface ofPd metal.M\ Lindroos, H. Asonen, M. Pessa. 1174

An angle resolved photoemission study of a TiN (100) singlecrystal surface.L.I. Johansson, P.M. Stefan, A. Callenas, A.N. Christensen,K. Schwarz 1178

UV photoemission of the adsorption of oxygen and sulphur onplatinum surfaces.T.T.A. Nguyen, R.C. Cinti, Y. Capiomont 1181

The electron states of a monolayer of Cu onto Ni (111).I. Abbati, L. Braicovich, A. Fasana, C M . Bertoni, C Calandra,F. Manghi. H85

Investigation of the electronic structure of titanium oxides nearthe Fermi level.W. Weissmann, P. Braun, F.P. Viehbock 1189

Influence of coulomb correlations on UV photoemission of transitionmetal surfaces.G. Treglia, F. Ducastelle, M.C. Desjonqueres, D. Spanjaard 1193

Surface dependence of photoemission yield under 2—quantumexcitation in Si (111).M. Bensoussan, J.M. Moison, B. Stoesz, C. Sebenne 1197

Directional UV photoemission from (110) molybdenum surface.P. Mikusik, Z. Bastl 1200

Study of the W^f core levels.Tran Minh Due, D. Spanjaard, J. Lecante, M.C. Desjonqueres, C.Guillot, Y. Jugnet, Y. Lassailly 1204

Section 16. ION BOMBARDMENT

The evolution of surface shape during ion etching.R. Smith, S.S. Makh, J.M. Walls 1209

Ion-excited Auger electron emission from alloys.P. Viaris de Lesegno 1213

Dose dependence of sputtering yield of Si under low energy noblegas ion bombardment investigated by combined Auger-X-ray analysis.H.W. Etzkorn, J. Kirschner 1217

XXX

Variation of the ion induced desorption yields with temperatureand the nature of the incident ions.N. Hilleret 1221

Sputtering of Fe-Cr-Ni alloys.M. Opitz, G. Betz, P. Braun. 1225

Negative-ion production upon the dissociative scattering of H_0on a Cu (110) surface.R.P.N. Bronckers, A.G.J. de Wit , T.M. Hupkens, J.M. Fluit,A. Niehaus 1229

Emission of neutral particles and secondary ions from ionbombarded Ta covered with oxygen and nitrogen.H. Oechsner, E. Stumpe 1234

The dependence of the sputter and secondary ion yields of siliconupon various parameters.A.E. Morgan, H.A.M. de Grefte, H.J. Tolle, N. Warmoltz,H.W. Werner 1238

Section 17. IMPACT OF IONS AND METASTABLE ATOMS; STIMULATEDDESORPTION

Mechanisms of ion neutralization and metastable de-excitationat solid surfaces.H.D. Hagstrum 1245

Surface penning ionization of the co-covered Pd (111) surfaceby metastable helium (2'S, 2 S)-beams.Sheng-Wei Wang, H. Conrad, G. Ertl, J. Kuppers, H. Haberland 1248

ARMDS study of oxygen adsorption on molybdenum.C. Boiziau, F. Mucchielli, R. Nuvolone, C. Reynaud, J. Roussel 1252

Electron emission from clean and adsorbate covered Pd (111).Surfaces by impact of metastable He-beams.H. Conrad, G. Ertl, J. Kuppers, W. Sesselmann 1255

Recent developments in electron and photon stimulated desorption.D. Menzel 1259

Electron-stimulated desorption of coadsorbed oxygen and sodiumon the W (100) surface.V.N. Ageev, S.G. Kassabov, T.S. Marinova 1263

The postionization of field evaporated ions.R. Haydock, D. Kingham. 1267

Section 18. SURFACE ANALYSIS

Secondary ion emission from organic compounds.A. Benninghoven, A. Eicke, M. Jirikowsky, M. Junack, W. Lange,W. Sichtermann 1273

XXXI

Proposal for a formalism in Auger quantitative analysis takingaccount of the diffusion of the primary electrons.J. Le Hericy, H. Tokutaka, S. Bouquet, J.P. Langeron 1277

Quantitative Auger analysis by iterative method for plural-component alloy.T. Sekine, A. Mogami 1283

Quantiative Auger electron spectroscopy analysis of Fe—Cr andFe-Ni-Cr alloys.P.J.K. Paterson, H.K. Wagenfeld, W. Mattews, P.W. Wright. 1287

Auger analysis of the Ta2O_-Ta interface.H. Schoof, H. Oechsner 1291

Determination of domain distribution by analysis of LEED beamprofiles.W. Moritz, D. Wolf 1295

The interaction of ethylene and acetylene with hydrogen andoxygen on polycrystalline nickel investigated by SIMS and TDMS.A. Benninghoven, P. Beckmann, M. Schemmer. , 1299

Investigation of oxide catalyst surfaces by means of positroniutnatoms.A.Z. Ilyasov, A.V. Mikhailin 1303

Comparison of correcting factors in quantitative Auger electronspectroscopy and electron probe microanalysis.A. Jablonski 1307

Surface composition changes of NiCr alloys produced by Ar ionsputtering.A. Zalar 1311

Low energy Auger transitions of some 3D-metal fluorides.R. Weissmann, A. Then, K. Miiller 1315

Study of surface composition changes of Ag-Pd alloys in Augerdepth profile analysis.H.J. Mathieu, D. Landolt 1319

A new fast photoelectron spectrometer for surface studies.W.R. Salaneck, H.R. Thomas, E.W. Plummer, B. Tonner, H.J. Freund. 1323

Low energy ion scattering structural analysis of ZnO surfaces.C. Creemers, H. van Hove, A. Neyens 1324

Determination of growth mechanism by quantitative Auger.J. Werckmann, A. Mosser, J.P. Deville 1330

SIMS spectra obtained from NBS 660 steel bombarded caesium ions.M. Baril, M. Babou 1334

Luminescence spectroscopy of surface species on metal oxides.R.W. Kessler, D. Oelkrug, S. Uhl _ __

XXXII

Surface characterization of anodized and chemically treatedvalve-metals by using X-ray emission spectroscopy.M. Romand, A. Roche, M. Charbonnier, R. Bador 1342

Chlorine migration under electron bombardment observed by AES.S. Bouquet, J. Bergner, J. Le Hericy, J.P. Langeron 1346

Measurement of the population distribution of sputtered Fe-atomswith laser induced fluorescence spectroscopy.B. Schweer, H.L. Bay 1349

Auger electron spectroscopy of carbon on Fe-Si (110).F. Bezuidenhout, J.A.J. Lourens, G.L.P. Berning, J.P.Roux,P.E. Viljoen 1353

Effects of surface energy on thin film depth profiling.W. Losch, C.A. Achete 1357

Scandium, yttrium and lutetium surfaces studied by electronspectroscopy.J. Onsgaard, S. Tougaard, P. !lorgen, F. Ryborg 1361

Spatial resolution of the Auger microanalysis - Results of amodel calculation.H.J. Dudek 1365

The investigation of the oxide formation on the surfaces ofFe-Cr and Fe-Al alloys.A.G. Akimov 1369

Electron beam effects during AES analysis of glass surfaces.P.H. Holloway, F. Ohuchi 1372

Chemical bonding and microstructures of metal/Si interfacesduring silicide formation.P.S. Ho, H. Foil, J.E. Lewis, P.E. Schmid 1376

AES-ESCA studies of the sulphur peak in various sulphurcompounds.D. Lichtman, M. Drinkwine, V. Sailer, J. Craig 1380

The characteristics of epitaxial overgrowths of sulfides formedon NiO and CoO : a surface analysis with RHEED, LEED and AES.A. Steinbrunn, P. Dumas 1384

On the detection of small inclusions by AES.M. Menyhard 1388

Backscattering spectra for Auger electron spectroscopy.G. Gergely, M. Menyhard, B. Gruzza 1392

A quantitative ion-scattering study of the Ni (110) surfaceduring the early stages of oxidation.R.G. Smeenk, R.M. Tromp, J.F. van der Veen, F.W. Saris 1396

Contribution of secondary, backscattered, and elasticallyreflected electrons to the total electron yield of a clean and

XXXIII

oxygen covered aluminium sample.F. Pellerin, C. Le Gressus 1400

Section 19. SOME RECENT RESULTS IN SURFACE PHYSICS ANDCHEMISTRY

UPS of molecular solid surfaces : some homogeneous and inhomoge-neous contributions to spectral line-widths.W.R. Salaneck, C.B. Duke, E.W. Plummer, W. Eberhardt 1407

Mechanisms of ejection due to ion bombardment : c(4x4) overlayerof benzene on Ni (001).B.J. Garrison 14U

The entrance probability and range of helium in W (100) forenergies 8 eV to 5 000 eV as measured by thermal desorptionspectrometry.A.A. van Gorkum, E.V. Kornelsen 1415

Low energy (5 - 16 keV) noble gas particles scattered fromstep structures at copper surfaces.S.B. Luitjens, A.J. Algra, E.P. Th. M. Suurmeiyer, A.L. Boers 1419

Section 20. APPENDIX

Adsorption on oxides.G. Heiland, H. Lutz 1425

Spectroscopic studies of metal-electrolyte interfaces : asurvey of methods and results.J.K. Sass 1426

Survey of two-dimensional phase transitions of physiadsorbedfilms on lamellar solids.A. Thorny 1439

Photoelectron diffraction studies of chemisorbed overlayers.P.D. Johnson, H.H. Farrell, M.M. Traum, N.V. Smith, W.A. Royer,D.P. Woodruff 1444

XXXIV