Quantum Hall to Insulator Transition in the Bilayer Quantum Hall Ferromagnet

被引：7

作者：

Murthy, Ganpathy ^{[1
]}

Sachdev, Subir ^{[2
]}

机构：

[1] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.101.226801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a phase transition of the bilayer quantum Hall ferromagnet at nu=1. In the presence of static disorder (modeled by a periodic potential), bosonic S=1/2 spinons undergo a superfluid-insulator transition while preserving ferromagnetism. The Mott insulating phase has an emergent U(1) photon, and the transition is between Higgs and Coulomb phases of this photon. Consequences for charge and counterflow conductivity and for interlayer tunneling conductance are discussed.

引用

页数：4

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