Spin diffusion in the double-exchange model at T = ∞

被引：5
|
作者：
Fishman, RS [1 ]
机构：
[1] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA
来源：
PHYSICAL REVIEW B | 2000年 / 62卷 / 06期
关键词：
D O I：
10.1103/PhysRevB.62.R3600
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The process of spin diffusion within the double-exchange model is studied on a Bethe lattice in infinite dimension at T=infinity. In the absence of electron hopping, the spin-current correlation function oscillates with a period inversely proportional to the Hund's coupling and the spin-diffusion coefficient D vanishes. Electron hopping causes the correlation function to decay with time and yields a value for D proportional to the electron bandwidth.
引用
收藏
页码：R3600 / R3603
页数：4
相关论文
共 50 条
  • [41] Mechanism for lifting the degeneracy in the double-exchange spin ice model on a kagome lattice: Dodecamer formation
    Shimomura, Y
    Miyahara, S
    Furukawa, N
    PHYSICA B-CONDENSED MATTER, 2005, 359 : 1249 - 1251
  • [42] T=0 phase diagram of the double-exchange model -: art. no. 012416
    Chattopadhyay, A
    Millis, AJ
    Das Sarma, S
    PHYSICAL REVIEW B, 2001, 64 (01)
  • [43] Magnetoresistance of ferromagnetic tunnel junctions in the double-exchange model
    Itoh, H
    Ohsawa, T
    Inoue, J
    PHYSICAL REVIEW LETTERS, 2000, 84 (11) : 2501 - 2504
  • [44] Electronic phase separation in the pyrochlore double-exchange model
    Motome, Yukitoshi
    Furukawa, Nobuo
    PHYSICAL REVIEW B, 2010, 82 (06)
  • [45] Numerical study of photoinduced dynamics in a double-exchange model
    Kanamori, Y.
    Matsueda, H.
    Ishihara, S.
    PHYSICAL REVIEW B, 2010, 82 (11):
  • [46] Dynamical generation of a gauge symmetry in the double-exchange model
    Carmona, JM
    Cruz, A
    Fernández, LA
    Jiménez, S
    Martín-Mayor, V
    Muñoz-Sudupe, A
    Pech, J
    Ruiz-Lorenzo, JJ
    Tarancón, A
    Téllez, P
    PHYSICS LETTERS B, 2003, 560 (1-2) : 140 - 148
  • [47] Frustration-induced dodecamer ordering in the double-exchange spin ice model on the kagome lattice
    Shimomura, Y
    Miyahara, S
    Furukawa, N
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2005, 74 (02) : 661 - 669
  • [48] Magnetic susceptibility and order parameter of the spin-glass-like phase of the double-exchange model
    Fishman, Randy S.
    PHYSICAL REVIEW LETTERS, 2006, 97 (17)
  • [49] Doped manganites beyond conventional double-exchange model
    Moskvin, AS
    Avvakumov, IL
    PHYSICA B-CONDENSED MATTER, 2002, 322 (3-4) : 371 - 389
  • [50] Ferromagnetic transition in the double-exchange model on the pyrochlore lattice
    Motome, Yukitoshi
    Furukawa, Nobuo
    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, 200
12345