Temperature-dependent screening of the edge state around antidots in the quantum Hall regime.
The Aharonov-Bohm effect in a small array of antidots with a large aspect ratio is investigated in the quantum Hall regime. The evolution with temperature of the Aharonov-Bohm oscillations in the magnetic field versus gate voltage (B-V_{g}) plane reveals the temperature dependence of the screening. The self-consistently screened potential of the compressible band surrounding an antidot is observed to gain a progressively steeper slope with increasing temperature.
Kato
Masanori
M
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan. masanori@issp.u-tokyo.ac.jp
Endo
Akira
A
Katsumoto
Shingo
S
Iye
Yasuhiro
Y