SURFACE-POLARITONS ON ANTIFERROMAGNETIC SUPERLATTICES

被引:41
作者
ALMEIDA, NS [1 ]
TILLEY, DR [1 ]
机构
[1] UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
关键词
Magnetic Materials - Antiferromagnetism;
D O I
10.1016/0038-1098(90)90007-X
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The effective-medium theory of magnetic superlattices is applied to uniaxial antiferromagnets without an external field. The effective magnetic permeability tensor is then diagonal but anisotropic. a surface polariton exists on a semi-infinite antiferromagnet/non-magnet superlattice; it has a magnetostatic limit if f1> 1 2, where f1 is the proportion of antiferromagnet, but is a virtual mode qithout a magnetostatic limit of f1 < 1 2. Calculations of attenuated-total-reflection spectra for the FeF2/ZnF2 system indicate that the surface polariton should be observable by this means. © 1990.
引用
收藏
页码:23 / 27
页数:5
相关论文
共 21 条
  • [11] COLLECTIVE BEHAVIOR OF MAGNONS IN SUPER-LATTICES
    GRIMSDITCH, M
    KHAN, MR
    KUENY, A
    SCHULLER, IK
    [J]. PHYSICAL REVIEW LETTERS, 1983, 51 (06) : 498 - 500
  • [12] GRUNBERG P, 1983, PHYS REV B, V27, P2408
  • [13] VIRTUAL EXCITATION TYPE SURFACE POLARITONS ON ANISOTROPIC MEDIA
    HARTSTEIN, A
    BURSTEIN, E
    BRION, JJ
    WALLIS, RF
    [J]. SOLID STATE COMMUNICATIONS, 1973, 12 (10) : 1083 - 1086
  • [14] POLARITON MODES OF SEMICONDUCTOR SUPERLATTICE SYSTEMS
    LIU, WM
    ELIASSON, G
    QUINN, JJ
    [J]. SOLID STATE COMMUNICATIONS, 1985, 55 (06) : 533 - 535
  • [15] LYUBIMOV VN, 1972, FIZ TVERD TELA+, V14, P875
  • [16] FAR INFRARED REFLECTIVITY OF SEMICONDUCTOR SUPERLATTICE AND MULTI-QUANTUM-WELL STRUCTURES
    MASLIN, KA
    PARKER, TJ
    RAJ, N
    TILLEY, DR
    DOBSON, PJ
    HILTON, D
    FOXON, CTB
    [J]. SOLID STATE COMMUNICATIONS, 1986, 60 (05) : 461 - 464
  • [17] MILLS DL, 1984, SURFACE EXCITATIONS, pCH3
  • [18] TRANSVERSE SURFACE AND SLAB MODES IN SEMICONDUCTOR SUPERLATTICES
    RAJ, N
    TILLEY, DR
    [J]. SOLID STATE COMMUNICATIONS, 1985, 55 (04) : 373 - 376
  • [19] THEORY OF FAR-INFRARED ATTENUATED TOTAL REFLECTION FROM SEMICONDUCTOR SUPERLATTICES
    RAJ, N
    CAMLEY, RE
    TILLEY, DR
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (31): : 5203 - 5216
  • [20] POLARITON AND EFFECTIVE-MEDIUM THEORY OF MAGNETIC SUPERLATTICES
    RAJ, N
    TILLEY, DR
    [J]. PHYSICAL REVIEW B, 1987, 36 (13): : 7003 - 7007