THEORY OF SPIN-WAVES IN FERROMAGNETIC SUPERLATTICES WITH NONUNIAXIAL SINGLE-ION-ANISOTROPY

被引：11

作者：

ALBUQUERQUE, EL ^{[1
]}

COTTAM, MG ^{[1
]}

机构：

[1] UNIV FED RIO GRANDE NOTRE,DEPT FIS,BR-59072 NATAL,RN,BRAZIL

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.46.14543

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Calculations based on linear-response theory and the semiclassical torque equation are presented for the role of nonuniaxial single-ion ansiotropy in two-component magnetic superlattices. A Green-function analysis is developed within the Heisenberg model of a ferromagnetic crystal for the bulk and surface exchange-dominated spin waves in superlattices where one material is a nonuniaxial (or "easy-plane") ferromagnet and the other material is a uniaxial (or "easy-axis") ferromagnet. The influence of the anisotropy on the spectrum of bulk spin-wave bands and surface branches is illustrated by numerical examples.

引用

页码：14543 / 14549

页数：7

共 24 条

[1] SPIN-WAVES IN A MAGNETIC SUPERLATTICE [J].

ALBUQUERQUE, EL ;

FULCO, P ;

SARMENTO, EF ;

TILLEY, DR .

SOLID STATE COMMUNICATIONS, 1986, 58 (01) :41-44

[2] DYNAMICAL RESPONSE OF ANTIFERROMAGNETS IN AN OBLIQUE MAGNETIC-FIELD - APPLICATION TO SURFACE MAGNONS [J].

ALMEIDA, NS ;

MILLS, DL .

PHYSICAL REVIEW B, 1988, 37 (07) :3400-3408

[3] SPIN-WAVES IN SUPERLATTICES .1. GENERAL DISPERSION EQUATIONS FOR EXCHANGE, MAGNETOSTATIC AND RETARDED MODES [J].

BARNAS, J .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (05) :1021-1036

[4] RETARDED MODES IN LAYERED MAGNETIC-STRUCTURES [J].

BARNAS, J .

SOLID STATE COMMUNICATIONS, 1987, 61 (06) :405-408

[5] PHASE-TRANSITIONS IN MAGNETIC SUPERLATTICES [J].

CAMLEY, RE ;

TILLEY, DR .

PHYSICAL REVIEW B, 1988, 37 (07) :3413-3421

[6] MAGNETOSTATIC THEORY OF COLLECTIVE EXCITATIONS IN FERROMAGNETIC AND ANTIFERROMAGNETIC SUPERLATTICES WITH MAGNETIZATION PERPENDICULAR TO THE SURFACE [J].

CAMLEY, RE ;

COTTAM, MG .

PHYSICAL REVIEW B, 1987, 35 (01) :189-196

[7] MAGNETIC EXCITATIONS IN LAYERED MEDIA - SPIN-WAVES AND THE LIGHT-SCATTERING SPECTRUM [J].

CAMLEY, RE ;

RAHMAN, TS ;

MILLS, DL .

PHYSICAL REVIEW B, 1983, 27 (01) :261-277

[8]

Cottam M.G., 1989, INTRO SURFACE SUPERL

[9] THEORY OF BULK AND SURFACE MAGNONS IN HEISENBERG FERROMAGNETIC SUPERLATTICES [J].

DOBRZYNSKI, L ;

DJAFARIROUHANI, B ;

PUSZKARSKI, H .

PHYSICAL REVIEW B, 1986, 33 (05) :3251-3256

[10]

Dzialoshinski I., 1958, J PHYS CHEM SOLIDS, V4, P241

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