Post on 01-Oct-2020
Hong-Hao Tu (ITP, TU Dresden)
Solid State Theory (SS2020)
Email: hong-hao.tu@tu-dresden.deZoom: tuhonghao@gmail.com
SFB 1143
Lecture 14: Classical electron transport theory
June 10th, 2020
§4.1 Drude theory
• Q: How does the solid react in the presence of external perturbations?
§4.1 Drude theory
• Q: How does the solid react in the presence of external perturbations?
• Direct-current (DC) conductivity:
§4.1 Drude theory
• Direct-current (DC) conductivity:
§4.1 Drude theory
• Direct-current (DC) conductivity:
§4.1 Drude theory
§4.1 Drude theory
§4.1 Drude theory
§4.1 Drude theory
• Equation of motion (E.O.M.):
§4.1 Drude theory
§4.1 Drude theory
classical EOM under the relaxation time assumption
If 𝑓 𝑡 = 0, Ԧ𝑝 𝑡 = Ԧ𝑝0𝑒−𝑡/𝜏.
§4.1 Drude theory
• Hall effect:
§4.1 Drude theory
• Hall effect:
§4.1 Drude theory
§4.1 Drude theory
§4.1 Drude theory
§4.1 Drude theory
§4.1 Drude theory
Positively charged “holes” as carriers (quantum theory needed)
§4.1 Drude theory
• Alternating-current (AC) conductivity:
§4.1 Drude theory
• Alternating-current (AC) conductivity:
§4.1 Drude theory
§4.1 Drude theory