COULOMB GAP IN A 2-DIMENSIONAL ELECTRON-GAS WITH A CLOSE METALLIC ELECTRODE

被引：25
作者：
PIKUS, FG
EFROS, AL
机构：
[1] Department of Physics, University of Utah, Salt Lake City
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.51.16871
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tunneling density of states of a classical two-dimensional electron gas with large external disorder and strong electron-electron interaction is studied by computer modeling and by solving a self-consistent equation. The Coulomb interaction is supposed to be strongly suppressed at large distances by a parallel metallic plane. At low temperatures the Coulomb gap is found to exist even if the metallic plane is at a smaller distance from the electron gas than the electron-electron separation. These results are explained in terms of a self-consistent equation. The tunneling density of states as obtained from computer modeling is compared to recent experimental data by Ashoori et al. For a strong magnetic field our results are in a good agreement with the experiment. © 1995 The American Physical Society.
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页码：16871 / 16877
页数：7
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