EQUILIBRIUM DYNAMICS OF A PARAMAGNETIC CLUSTER

被引：18

作者：

CHERTKOV, M

KOLOKOLOV, I

机构：

[1] BUDKER INST NUCL PHYS,NOVOSIBIRSK 630090,RUSSIA

[2] IST NAZL FIS NUCL,I-20133 MILAN,ITALY

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.51.3974

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transverse autocorrelation function at an arbitrary temperature is calculated rigorously for a system with an arbitrary number of quantum spins, each of which is coupled to all the other spins with equal exchange. It is shown that the cluster approximation, formed by a model for a real magnet, explains short- and intermediate-time (up to the time to reach the spin-diffusion regime) experimental measurements in the paramagnetic phase. © 1995 The American Physical Society.

引用

页码：3974 / 3977

页数：4

共 28 条

[1] Belinicher V. I., 1984, Soviet Physics - JETP, V59, P564
[2] BENNETT HS, 1965, PHYS REV A, V138, P608
[3] ON THE INTERACTION OF NUCLEAR SPINS IN A CRYSTALLINE LATTICE
BLOEMBERGEN, N
[J]. PHYSICA, 1949, 15 (3-4): : 386 - 426
[4] SPIN CORRELATION FUNCTIONS AT HIGH TEMPERATURES
BLUME, M
HUBBARD, J
[J]. PHYSICAL REVIEW B, 1970, 1 (09): : 3815 - &
[5] PARAMAGNETIC NEUTRON-SCATTERING FROM THE HEISENBERG-FERROMAGNET EUO
BONI, P
SHIRANE, G
[J]. PHYSICAL REVIEW B, 1986, 33 (05): : 3012 - 3019
[6] LONG-TIME DYNAMICS OF THE INFINITE-TEMPERATURE HEISENBERG MAGNET
CHERTKOV, M
KOLOKOLOV, I
[J]. PHYSICAL REVIEW B, 1994, 49 (05): : 3592 - 3595
[7] COLLINS M, 1967, P PHYS SOC LOND, V92, P367
[8] CRITICAL AND PARAMAGNETIC SPIN FLUCTUATIONS IN HEISENBERG MAGNETS
CUCCOLI, A
TOGNETTI, V
LOVESEY, SW
[J]. PHYSICAL REVIEW B, 1989, 39 (04): : 2619 - 2631
[9] TIME-DEPENDENT CORRELATIONS FOR SPIN VAN DER WAALS SYSTEMS
DEKEYSER, R
LEE, MH
[J]. PHYSICAL REVIEW B, 1979, 19 (01): : 265 - 273
[10] NONEQUILIBRIUM STATISTICAL-MECHANICS OF THE SPIN-1/2 VANDERWAALS MODEL .1. TIME EVOLUTION OF A SINGLE SPIN
DEKEYSER, R
LEE, MH
[J]. PHYSICAL REVIEW B, 1991, 43 (10) : 8123 - 8130

← 1 2 3 →