NEMATIC SMECTIC

1cos32

1cos 2

2 P

director

3 x 3 tensor with two independent eigenvalues

z

3He/4He mixture

Physical system Variable 1 Variable 23He-4He mixtures density or concentration Temperature

Vortex-lattice melting Magnetic fieldTemperature

Liquid crystals ConcentrationTemperature

Cold Fermi gas Spin polarisationTemperature

Ferroelectrics Pressure or electric fieldTemperature

MetamagnetsPressure or magnetic

fieldTemperature

Structural transition Pressure Temperature

Melting on graphite Coverage Temperature

Solidification Pressure Temperature

Taylor-Couette vortex pair

Aspect ratio Rotation rate