Localized magnetic excitations of coupled impurities in a transverse Ising ferromagnet

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:295

Article

Leite, RV ; Pereira, JM ; Filho, RNC

关键词: Heisenberg ferromagnet;    Ising model transverse;    Green's function;    spin wave;    impurities modes;   

DOI  :  10.1016/j.jmmm.2004.12.039

来源: Elsevier

【 摘 要 】

A Green's function formalism is used to calculate the spectrum of excitations of two neighboring impurities implanted in a semi-infinite ferromagnetic. The equations of motion for the Green's functions are determined in the framework of the Ising model in a transverse field and results are given for the effect of the exchange coupling, position and orientation of the impurities on the spectra of localized spin wave modes. (c) 2005 Elsevier B.V. All rights reserved.

【 授权许可】

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