Spin-wave theory of impurity states near the interface between two ferromagnets

Niu Niu Chen, M. G. Cottam, A. F. Khater

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A closed form of the spin-wave Green function is obtained for a system consisting of two different Heisenberg ferromagnets coupled by an interface. The calculations employ a tridiagonal matrix method and the random-phase approximation. The results are used to calculate the localized modes associated with an isolated impurity at or near the interface. Numerical examples of the modes are given, and they are found to exhibit various effects due to the interplay between the bulk and interface modes and the strength of the impurity-related interactions.

Original languageEnglish
Pages (from-to)1003-1009
Number of pages7
JournalPhysical Review B
Volume51
Issue number2
DOIs
Publication statusPublished - 1995
Externally publishedYes

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Spin waves
magnons
Impurities
impurities
Wave functions
Green's function
matrix methods
Green's functions
approximation
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Spin-wave theory of impurity states near the interface between two ferromagnets. / Chen, Niu Niu; Cottam, M. G.; Khater, A. F.

In: Physical Review B, Vol. 51, No. 2, 1995, p. 1003-1009.

Research output: Contribution to journalArticle

Chen, Niu Niu ; Cottam, M. G. ; Khater, A. F. / Spin-wave theory of impurity states near the interface between two ferromagnets. In: Physical Review B. 1995 ; Vol. 51, No. 2. pp. 1003-1009.
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