IT was discovered by Landau 1 that an electron gas should have, besides its spin paramagnetism, an appreciable diamagnetism due to the quantized orbital motions of the electrons in the magnetic field.

meeting at points called Dirac points. These points occur at energies near the Fermi level, and they represent the crossing-points in the electronic band structure that electrons avoid. The energy of ...

À haute température, lorsque les effets quantiques ne se font plus sentir, la statistique de Bose-Einstein, comme la statistique de Fermi-Dirac qui régit les fermions, tend vers la statistique de ...