ORDER BY DISORDER IN AN ANISOTROPIC PYROCHLORE LATTICE ANTIFERROMAGNET

被引：82

作者：

BRAMWELL, ST

GINGRAS, MJP

REIMERS, JN

机构：

[1] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

[2] SIMON FRASER UNIV,DEPT PHYS,BURNABY V5A 1S6,BC,CANADA

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 75卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.355676

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The properties of the classical Heisenberg pyrochlore lattice antiferromagnet with local planar single ion anisotropy are discussed. The zero temperature ground state is found to be macroscopically degenerate and without long range order. Monte Carlo simulations are used to investigate the properties of the system at finite temperature. We find that thermal fluctuations select a subset of the ground state manifold, and induce a first-order phase transition to a conventional Neel ground state.

引用

收藏

页码：5523 / 5525

页数：3

相关论文

共 17 条

[1] HELIMAGNETISM IN THE CUBIC LAVES PHASE YMN2 [J].

BALLOU, R ;

DEPORTES, J ;

LEMAIRE, R ;

NAKAMURA, Y ;

OULADDIAF, B .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1987, 70 (1-3) :129-133

[2] FINITE-SIZE SCALING AT 1ST-ORDER PHASE-TRANSITIONS [J].

BINDER, K ;

LANDAU, DP .

PHYSICAL REVIEW B, 1984, 30 (03) :1477-1485

[3] HIDDEN ORDER IN A FRUSTRATED SYSTEM - PROPERTIES OF THE HEISENBERG KAGOME ANTIFERROMAGNET [J].

CHALKER, JT ;

HOLDSWORTH, PCW ;

SHENDER, EF .

PHYSICAL REVIEW LETTERS, 1992, 68 (06) :855-858

[4]

CHANDRA P, 1993, J PHYS I, V3, P591, DOI 10.1051/jp1:1993104

[5] 1ST-ORDER PHASE-TRANSITION IN THE FCC HEISENBERG-ANTIFERROMAGNET [J].

DIEP, HT ;

KAWAMURA, H .

PHYSICAL REVIEW B, 1989, 40 (10) :7019-7022

[6]

FEREY G, 1986, REV CHIM MINER, V23, P474

[7] SPIN FREEZING IN THE GEOMETRICALLY FRUSTRATED PYROCHLORE ANTIFERROMAGNET TB2MO2O7 [J].

GAULIN, BD ;

REIMERS, JN ;

MASON, TE ;

GREEDAN, JE ;

TUN, Z .

PHYSICAL REVIEW LETTERS, 1992, 69 (22) :3244-3247

[8] NEUTRON-DIFFRACTION STUDY OF MAGNETIC-ORDERING IN THE PYROCHLORE SERIES ND2MO2O7, TB2MO2O7, Y2MO2O7 [J].

GREEDAN, JE ;

REIMERS, JN ;

STAGER, CV ;

PENNY, SL .

PHYSICAL REVIEW B, 1991, 43 (07) :5682-5691

[9]

HEINILA MT, IN PRESS PHYS REV B

[10] ABSENCE OF LONG-RANGE ORDER IN A 3-DIMENSIONAL GEOMETRICALLY FRUSTRATED ANTIFERROMAGNET [J].

REIMERS, JN .

PHYSICAL REVIEW B, 1992, 45 (13) :7287-7294