LANDAU THEORY OF THE MAGNETIC PHASE-DIAGRAM OF CSMNBR3

被引:33
作者
PLUMER, ML [1 ]
CAILLE, A [1 ]
机构
[1] UNIV SHERBROOKE,DEPT PHYS,SHERBROOKE J1K 2R1,QUEBEC,CANADA
来源
PHYSICAL REVIEW B | 1990年 / 41卷 / 04期
关键词
D O I
10.1103/PhysRevB.41.2543
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The magnetic-field temperature phase diagram of CsMnBr3 determined by recent neutron-scattering results is explained here by an investigation of a previously developed nonlocal Landau-type free energy. The degeneracy of helically and linearly polarized spin configurations at the Néel temperature is broken by a magnetic field and is shown to be responsible for the novel type of multicritical point observed at T=TN, H=0. The theory also accounts for the spin structures of the observed ordered phases as well as the temperature dependences of the phase boundaries. © 1990 The American Physical Society.
引用
收藏
页码:2543 / 2546
页数:4
相关论文
共 25 条
  • [21] MULTICRITICAL POINTS IN THE MAGNETIC PHASE-DIAGRAMS OF AXIAL AND PLANAR ANTIFERROMAGNETS
    PLUMER, ML
    CAILLE, A
    HOOD, K
    [J]. PHYSICAL REVIEW B, 1989, 39 (07): : 4489 - 4499
  • [22] PHASE-DIAGRAMS OF SYSTEMS EXHIBITING INCOMMENSURATE STRUCTURES
    SCHAUB, B
    MUKAMEL, D
    [J]. PHYSICAL REVIEW B, 1985, 32 (10): : 6385 - 6393
  • [23] SPLITTING OF THE NEEL TRANSITION IN HOLMIUM IN A MAGNETIC-FIELD
    STEINITZ, MO
    KAHRIZI, M
    TINDALL, DA
    [J]. PHYSICAL REVIEW B, 1987, 36 (01): : 783 - 784
  • [24] PHENOMENOLOGICAL THEORY OF THE MAGNETIC TRANSITIONS IN CSNICL3
    ZHU, XD
    WALKER, MB
    [J]. PHYSICAL REVIEW B, 1987, 36 (07): : 3830 - 3832
  • [25] [No title captured]