SURFACE-PROPERTIES OF PEROVSKITE ANTIFERROMAGNETS - SPECTRUM OF SPIN-WAVES AND IMPURITY MODES

被引：11
|
作者：
PACZEK, ID
CHEN, NN
COTTAM, MG
机构：
[1] Physics Department, University of Western Ontario, London, Ontario
来源：
PHYSICAL REVIEW B | 1992年 / 45卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.45.12898
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Analytic expressions for the Green functions for semi-infinite antiferromagnets with the perovskite structure are derived in a low-temperature spin-wave approximation. The results are applied to the calculation of spectral intensities for the surface spin-waves modes. Also the effects of an isolated magnetic impurity on the excitation spectrum of a semi-infinite Heisenberg antiferromagnet are studied by extending the Green-function analysis. The influence of the bulk and surface spin waves on the impurity-mode energies is obtained, and the theory is applied to several perovskite-structure antiferromagnets.
引用
收藏
页码：12898 / 12904
页数：7
相关论文
共 50 条
  • [31] HYBRIDIZATION OF SURFACE AND IMPURITY SPIN-WAVES INDUCED BY THEIR PROPAGATION IN THE PLANE OF A THIN FERROMAGNETIC FILM
    KOLODZIEJCZAK, B
    PUSZKARSKI, H
    ACTA PHYSICA POLONICA A, 1991, 80 (05) : 675 - 687
  • [32] SPIN-WAVES AT THE SURFACE OF DILUTE FERROMAGNETS
    MORANLOPEZ, JL
    FALICOV, LM
    PHYSICAL REVIEW B, 1979, 19 (03): : 1470 - 1475
  • [33] SPIN-WAVES AT THE SURFACE OF DILUTE FERROMAGNETS
    MORANLOPEZ, JL
    FALICOV, LM
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1979, 24 (03): : 238 - 238
  • [34] SPECTRUM OF SPIN WAVES IN FERRO-ANTIFERROMAGNETS
    MITSEK, AI
    ZVEZDIN, VK
    SOVIET PHYSICS SOLID STATE,USSR, 1965, 7 (04): : 848 - &
  • [35] NONLINEAR SURFACE SPIN-WAVES IN A FERROMAGNETIC
    KOVALEV, AS
    FIZIKA TVERDOGO TELA, 1993, 35 (07): : 1935 - 1941
  • [36] THE SURFACE SPIN-WAVES IN THE MULTIBAND MODEL
    SWIRKOWICZ, R
    SWIDERCZAK, K
    PHYSICA B & C, 1986, 141 (02): : 199 - 202
  • [37] SPECTRUM OF PARAMETRICALLY EXCITED SPIN-WAVES IN FERRITES
    KUTOVOI, NG
    MELKOV, GA
    FIZIKA TVERDOGO TELA, 1975, 17 (03): : 958 - 960
  • [38] THEORY OF NONLINEAR SURFACE SPIN-WAVES
    NIKITOV, SA
    WALLIS, RF
    PHYSICAL REVIEW B, 1994, 50 (02): : 998 - 1000
  • [39] THEORY OF RELAXATION OF SPIN-WAVES IN ANTIFERROMAGNETS IN STRONG MAGNETIC-FIELDS
    STEFANOVICH, AV
    FIZIKA TVERDOGO TELA, 1977, 19 (02): : 364 - 372
  • [40] SURFACE SPIN-WAVES IN PLATE OF FERROMAGNET
    BRYKSIN, VV
    RAITSEV, AV
    FIRSOV, YA
    FIZIKA TVERDOGO TELA, 1975, 17 (03): : 685 - 695
12345