MANY-BODY INTEGER QUANTUM HALL-EFFECT - EVIDENCE FOR NEW PHASE-TRANSITIONS

被引：341

作者：

MURPHY, SQ

EISENSTEIN, JP

BOEBINGER, GS

PFEIFFER, LN

WEST, KW

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.72.728

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nu = 1 quantum Hall effect in bilayer 2D electron systems is shown to continuously evolve from a regime dominated by single-particle tunneling into one where interlayer Coulomb interactions stabilize the state. This many-body integer quantum Hall state exhibits a phase transition to a compressible state at large layer separation. We also find evidence for an intriguing and unexpected second transition to a new incompressible state, driven by an in-plane magnetic field. While the origin of this last result is unclear, we discuss a recent model of a pseudospin textural phase transition.

引用

页码：728 / 731

页数：4

共 22 条

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