Anomalous stability of nu=1 bilayer quantum Hall state

被引：13

作者：

Sawada, A

Ezawa, ZF

Ohno, H

Horikoshi, Y

Sugie, O

Kishimoto, S

Matsukura, F

Ohno, Y

Yasumoto, M

机构：

[1] TOHOKU UNIV,ELECT COMMUN RES INST,SENDAI,MIYAGI 98077,JAPAN

[2] WASEDA UNIV,SCH SCI & ENGN,TOKYO 169,JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 103卷 / 08期

关键词：

heterojunctions; quantum wells; fractional quantum; Hall effect; quantum Hall effect; tunnelling;

D O I：

10.1016/S0038-1098(97)00221-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the fractional and integer quantum Hall (QH) effects in a high-mobility double-layer two-dimensional electron system. We have compared the ''stability'' of the QH state in balanced and unbalanced double quantum wells. The behavior of the nu = 1 QH state is found to be strikingly different from all others. It is anomalously stable, though all other states decay, as the electron density is made unbalanced between the two quantum wells. We interpret the peculiar features of the nu = 1 state as consequences of the interlayer quantum coherence developed spontaneously on the basis of the composite-boson picture. (C) 1997 Elsevier Science Ltd.

引用

页码：447 / 451

页数：5

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