Exact exponents for the spin quantum Hall transition

被引：181

作者：

Gruzberg, IA ^{[1
]}

Ludwig, AWW

Read, N

机构：

[1] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[3] Yale Univ, Dept Phys, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 22期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.82.4524

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Sire consider the spin quantum Wall transition which may occur in disordered superconductors with unbroken SU(2) spin-rotation symmetry but broken time-reversal symmetry. Using supersymmetry, we map a model for this transition onto the two-dimensional percolation problem. The anisotropic limit is an sl(2 \ 1) supersymmetric spin chain. The mapping gives exact values for critical exponents associated with disorder averages of several observables in good agreement with recent numerical results. [S0031-9007(99)09270-4].

引用

页码：4524 / 4527

页数：4

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