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
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.''
引用
收藏
页码:3509 / 3512
页数:4
相关论文
共 32 条
[1]   FUNCTIONAL INTEGRAL THEORIES OF LOW-DIMENSIONAL QUANTUM HEISENBERG MODELS [J].
AROVAS, DP ;
AUERBACH, A .
PHYSICAL REVIEW B, 1988, 38 (01) :316-332
[2]   DIRECTLY DETECTED NUCLEAR-MAGNETIC-RESONANCE OF OPTICALLY PUMPED GAAS QUANTUM-WELLS [J].
BARRETT, SE ;
TYCKO, R ;
PFEIFFER, LN ;
WEST, KW .
PHYSICAL REVIEW LETTERS, 1994, 72 (09) :1368-1371
[3]   On the Theory of the Exchange Problem and the Appearence of Retentive Ferromagnetic [J].
Bloch, F. .
ZEITSCHRIFT FUR PHYSIK, 1932, 74 (5-6) :295-335
[4]   On the theory of ferromagnetism [J].
Bloch, F. .
ZEITSCHRIFT FUR PHYSIK, 1930, 61 (3-4) :206-219
[5]   SPONTANEOUS BREAKDOWN OF CONTINUOUS SYMMETRIES NEAR 2 DIMENSIONS [J].
BREZIN, E ;
ZINNJUSTIN, J .
PHYSICAL REVIEW B, 1976, 14 (07) :3110-3120
[6]  
BYCHKOV YA, 1981, JETP LETT+, V33, P143
[7]   ELECTRON AND NUCLEAR MAGNETIC-RELAXATION IN LA2CUO4 AND RELATED CUPRATES [J].
CHAKRAVARTY, S ;
ORBACH, R .
PHYSICAL REVIEW LETTERS, 1990, 64 (02) :224-227
[8]   TWO-DIMENSIONAL QUANTUM HEISENBERG-ANTIFERROMAGNET AT LOW-TEMPERATURES [J].
CHAKRAVARTY, S ;
HALPERIN, BI ;
NELSON, DR .
PHYSICAL REVIEW B, 1989, 39 (04) :2344-2371
[9]   THEORY OF 2-DIMENSIONAL QUANTUM HEISENBERG ANTIFERROMAGNETS WITH A NEARLY CRITICAL GROUND-STATE [J].
CHUBUKOV, AV ;
SACHDEV, S ;
YE, J .
PHYSICAL REVIEW B, 1994, 49 (17) :11919-11961
[10]   THERMODYNAMIC BEHAVIOR OF AN IDEAL FERROMAGNET [J].
DYSON, FJ .
PHYSICAL REVIEW, 1956, 102 (05) :1230-1244