Evidence for bulk current in Hall bar samples and potential screening in the integer quantum Hall effect

被引：23

作者：

Yahel, E ^{[1
]}

Tsukernik, A

Palevski, A

Shtrikman, H

机构：

[1] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[2] Weizmann Inst Sci, Dept Condensed Matter, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.81.5201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The problem of current distribution in the integer quantum Hall regime was studied in Hall bar samples of a two-dimensional electron gas (2DEG) by means of an inductive coupling technique. It was found that in the absence of nearby metallic plates, such as gates, the total nonequilibrium Hall current is carried by 2DEG extended bulk states. The effects of potential screening on the current distribution are demonstrated. The spatial distribution of the Hall current, as monitored by the voltage developed across a small pickup coil, resembles the electrodynamic current distribution at zero magnetic field.

引用

页码：5201 / 5204

页数：4

共 23 条

[1]

AKOI H, 1981, SOLID STATE COMMUN, V38, P1079

[2] SELECTIVE EQUILIBRATION AMONG THE CURRENT-CARRYING STATES IN THE QUANTUM HALL REGIME [J].