Regensburg 2002 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 16: Transport im hohen Magnetfeld / QHE
HL 16.5: Vortrag
Dienstag, 12. März 2002, 12:00–12:15, H15
Hartree-Fock calculation for electrons in disordered samples and quantizing magnetic fields — •Alexander Struck1, Stefan Kettemann1, Tobias Brandes2, and Bernhard Kramer1 — 1I.Institut f. Theoretische Physik, Hamburg University, D-20355 Hamburg — 2Dept. of Physics, UMIST,P.O. Box 88, Manchester, M60 1QD, UK
We present an unrestricted SCF-calculation for interacting electrons in a random potential and a quantizing magnetic field. The electron-electron-interactions are approximated via the Hartree-Fock scheme which averages the Coulomb interaction and treats the quantum mechanical exchange term exactly. We analyze the influence of interaction on the localization properties and the density of states. An investigation of wave functions is performed. The density of the equilibrium currents in the system is calculated.