CONTINUUM QUANTUM FERROMAGNETS AT FINITE-TEMPERATURE AND THE QUANTUM HALL-EFFECT

被引：83

作者：

READ, N ^{[1
]}

SACHDEV, S ^{[1
]}

机构：

[1] YALE UNIV,DEPT APPL PHYS,NEW HAVEN,CT 06520

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3509

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study finite temperature (T) properties of the continuum quantum field theory of systems with a ferromagnetic ground state. A scaling theory of the T = 0 system is discussed carefully, and its consequences for crossovers between different finite T regimes in dimensions 1, 2, and 3 are described. The results are compared with recent NMR measurements of the magnetization of a quantum Hall system with filling factor v = 1; we predict that the relaxation rate 1/T-1 of this system may have a finite T ''ferromagnetic coherence peak.''

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页码：3509 / 3512

页数：4

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