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Anisotropic susceptibilities of thin ferromagnetic films within many-body Green function theory: single-ion anisotropy versus exchange anisotropy

2003/11/20 by P. Fröbrich, P. J. Kuntz · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic properties of thin films #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1088/0953-8984/16/20/016

published as J. Phys.: Condens. Matter 16(2004)3453-3463 · 16 pages, 8 figures

arxiv created 2003/11/20 · openalex publication_date 2004/05/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

Using many-body Green function theory for thin ferromagnetic Heisenberg films, we compare the static susceptibilities (transverse and parallel) calculated for uniaxial single-ion anisotropy and exchange anisotropy, respectively. Although there are qualitative differences in the results of these calculations with respect to the temperature dependence of the easy and hard axis magnetizations and susceptibilities, the calculated values of these observables are quantitatively so similar that it is unlikely that experimental measurements could decide on which type of anisotropy is acting in a real ferromagnetic film.

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