Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2003-04-09
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
12 pages, 12 figures
Scientific paper
10.1103/PhysRevB.68.125315
We examine within the self-consistent Thomas-Fermi-Poisson approach the low-temperature screening properties of a two-dimensional electron gas (2DEG) subjected to strong perpendicular magnetic fields. Numerical results for the unconfined 2DEG are compared with those for a simplified Hall bar geometry realized by two different confinement models. It is shown that in the strongly non-linear screening limit of zero temperature the total variation of the screened potential is related by simple analytical expressions to the amplitude of an applied harmonic modulation potential and to the strength of the magnetic field.
Gerhardts Rolf R.
Siddiki Afif
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