Phenomenological model of longitudinal spin fluctuations in itinerant antiferromagnets

被引：4
|
作者：
Solontsov, A. [1 ,2 ,3 ]
Antropov, V. P. [1 ]
机构：
[1] US DOE, Ames Lab, Ames, IA 50011 USA
[2] AA Bochvar Inorgan Mat Res Inst, Moscow 123060, Russia
[3] State Ctr Condensed Matter Phys, Moscow 155569, Russia
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
ELECTRON FERROMAGNETS; MAGNETIC FLUCTUATIONS; CRITICAL DYNAMICS; T-C; EXCITATIONS;
D O I：
10.1103/PhysRevB.81.104403
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present the phenomenological analysis of the spectrum of longitudinal spin fluctuations in isotropic itinerant electron antiferromagnets with account of spin anharmonicity giving rise to coupling of transverse and longitudinal normal modes. The spectrum consists of a quasielastic part forming a central peak or a dip, depending on temperature and the Landau relaxation rate. Effects of spin-fluctuation coupling also give rise to an inelastic part of the spectrum which has a form of resonances or antiresonances near the magnon frequencies related to nonpropagating longitudinal excitations.
引用
收藏
页数：7
相关论文
共 50 条
  • [21] LONGITUDINAL SPIN PAIR CORRELATION IN ANTIFERROMAGNETS
    TANI, K
    TANAKA, H
    PHYSICS LETTERS A, 1967, A 26 (02) : 68 - &
  • [22] Anisotropic spin fluctuations in frustrated itinerant magnets
    Solontsov, A
    Vasil'ev, A
    Nakamura, H
    Shiga, M
    PHYSICA B-CONDENSED MATTER, 1999, 259-61 : 922 - 923
  • [23] EFFECTS OF SPIN FLUCTUATIONS IN ITINERANT ELECTRON FERROMAGNETS
    SHIMIZU, M
    PHYSICS LETTERS A, 1981, 81 (01) : 87 - 90
  • [24] Frustration in itinerant antiferromagnets
    Lacroix, C
    Canals, B
    NunezRegueiro, MD
    Coqblin, B
    Arispe, J
    PHYSICA B-CONDENSED MATTER, 1997, 230 : 529 - 534
  • [25] Frustration in itinerant antiferromagnets
    Lacroix, C.
    Canals, B.
    Nunez-Regueiro, M.D.
    Coqblin, B.
    Arispe, J.
    Physica B: Condensed Matter, 230-232 : 529 - 534
  • [26] Comment on "Universal spin-flip transition in itinerant antiferromagnets" - Reply
    Varelogiannis, G.
    PHYSICAL REVIEW LETTERS, 2006, 96 (20)
  • [27] SPIN FLUCTUATIONS IN WEAK ITINERANT FERROMAGNETS NEAR TC
    KOLLEY, E
    KOLLEY, W
    PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1983, 119 (02): : K175 - K179
  • [28] ZERO-POINT SPIN FLUCTUATIONS IN ITINERANT MAGNETISM
    SOLONTSOV, AZ
    WAGNER, D
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 : 199 - 200
  • [29] THEORY OF SPIN FLUCTUATIONS IN ITINERANT-ELECTRON MAGNETS
    MORIYA, T
    PHYSICA B & C, 1977, 91 (JUL): : 235 - 243
  • [30] Weak itinerant antiferromagnetism: Two-band nesting model and effect of spin fluctuations
    Likhachev, DV
    Povzner, AA
    INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1996, 10 (10): : 1191 - 1210
12345