Detection of fractional edge channel by quantum point contacts

被引：2
|
作者：
Ando, M
Endo, A
Katsumoto, S
Iye, K
机构：
[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan
[2] Japan Sci & Technol Corp, CREST, Toshima Ku, Tokyo 171, Japan
来源：
SOLID-STATE ELECTRONICS | 1998年 / 42卷 / 7-8期
关键词：
D O I：
10.1016/S0038-1101(97)00325-0
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Conductance spectrum through a quantum point contact in quantum Hall liquid is investigated by its dependence on the excitation voltage. The occurrence of conductance plateaus different from the bulk Hall conductance indicates a gradual confinement potential at the sample edge. In the low excitation limit, the point contact is pinched off at smaller negative gate voltage for higher magnetic field. This trend is interpreted in terms of the magnetic field induced shift in the energy spectrum. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1179 / 1182
页数：4
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