Topological excitations in double-layer quantum Hall systems

被引：12

作者：

Moon, K

机构：

[1] Department of Physics and Astronomy, University of Oklahoma, Norman, OK

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 19期

基金：

美国国家科学基金会;

关键词：

SPONTANEOUS INTERLAYER COHERENCE; STRONG MAGNETIC-FIELD; PHASE-TRANSITIONS; COLLECTIVE MODES; INTEGER; NU=1;

D O I：

10.1103/PhysRevLett.78.3741

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Double-layer quantum Hall systems with spontaneous broken symmetry can exhibit a novel many body quantum Hall effect due to the strong interlayer coherence. When the layer separation becomes close to the critical value, quantum fluctuations can destroy the interlayer coherence and the quantum Hall effect will disappear. We calculate the renormalized isospin stiffness rho(s) due to quantum fluctuations within the Hartree-Fock-RPA formalism. The activation energy of the topological excitations thus obtained demonstrates a nice qualitative agreement with recent experiment.

引用

页码：3741 / 3744

页数：4

共 19 条

[1] COMMENSURATE PHASES, INCOMMENSURATE PHASES AND THE DEVILS STAIRCASE [J].