INPLANE DYNAMICS OF THE CLASSICAL 2-DIMENSIONAL EASY-PLANE HEISENBERG-MODEL AT LOW-TEMPERATURES

被引：17

作者：

MENEZES, SL ^{[1
]}

PIRES, AST ^{[1
]}

GOUVEA, ME ^{[1
]}

机构：

[1] UNIV FED MINAS GERAIS, INST CIENCIAS EXATAS, DEPT FIS, BELO HORIZONTE, MG, BRAZIL

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.47.12280

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have calculated the in-plane dynamical structure factor S(parallel-to)(q,omega) of the two-dimensional classical Heisenberg model with easy-plane anisotropy at low temperatures using the projection-operator technique. Beside the characteristic power-law singularity at the spin-wave frequency, we have found that S(parallel-to)(q,omega) diverges logarithmically as omega-->0 for finite values of q.

引用

页码：12280 / 12283

页数：4

共 14 条

[1] THEORY OF THE DYNAMIC SPIN RESPONSE FUNCTION NEAR THE KOSTERLITZ-THOULESS TRANSITION
COTE, R
GRIFFIN, A
[J]. PHYSICAL REVIEW B, 1986, 34 (09) : 6240 - 6247
[2] DYNAMIC-RESPONSE OF THE CLASSICAL EASY-PLANE ANTIFERROMAGNET AT LOW-TEMPERATURES
GOUVEA, ME
PIRES, AST
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (16): : 2431 - 2443
[3] CRITICAL PROPERTIES OF 2-DIMENSIONAL XY-MODEL
KOSTERLITZ, JM
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1974, 7 (06): : 1046 - 1060
[4] CRITICAL-DYNAMICS IN THE 2-DIMENSIONAL XY-MODEL
LANDAU, DP
GERLING, RW
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 104 : 843 - 844
[5] CALCULATION OF THE SPIN STIFFNESS FOR 2D EASY-PLANE MAGNETS
MENEZES, SL
GOUVEA, ME
PIRES, AST
[J]. PHYSICS LETTERS A, 1992, 166 (5-6) : 330 - 334
[6] 2-DIMENSIONAL CLASSICAL HEISENBERG-MODEL WITH EASY-PLANE ANISOTROPY AT LOW-TEMPERATURES - OUT-OF-PLANE DYNAMICS
MENEZES, SL
PIRES, AST
GOUVEA, ME
[J]. PHYSICAL REVIEW B, 1992, 45 (18): : 10454 - 10458
[7] PHONON PEAKS IN DYNAMIC STRUCTURE FUNCTION OF LATTICES WITHOUT LONG-RANGE ORDER
MIKESKA, HJ
[J]. SOLID STATE COMMUNICATIONS, 1973, 13 (01) : 73 - 76
[8] TRANSPORT COLLECTIVE MOTION AND BROWNIAN MOTION
MORI, H
[J]. PROGRESS OF THEORETICAL PHYSICS, 1965, 33 (03): : 423 - +
[9] DYNAMICS OF CLASSICAL XY SPINS IN ONE AND 2 DIMENSIONS
NELSON, DR
FISHER, DS
[J]. PHYSICAL REVIEW B, 1977, 16 (11): : 4945 - 4955
[10] EXACT RESULTS FOR THE DYNAMICS OF THE CLASSICAL NEAREST-NEIGHBOR HEISENBERG CHAIN AT LOW-TEMPERATURES
REITER, G
SJOLANDER, A
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1980, 13 (16): : 3027 - 3055

← 1 2 →