2005/03/08 by S. Schwieger, J. Kienert, Schwieger, S. +4
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Magnetism in coordination complexes #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0503178
10 pages, 9 figures, PRB in production
arxiv created 2005/03/08 · openalex publication_date 2005/03/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
There are different mechanisms proposed to be responsible for the temperature dependence of the interlayer exchange coupling (IEC), namely a smearing out of the spacer or interface Fermi surface and excitations and interactions of spin waves. We propose a possibility to separate both effects by calculating the excitation spectrum of an extended Heisenberg model and connecting the results with ferromagnetic resonance (FMR) experiments. To solve the Heisenberg model we use an approximation that was shown to yield excellent results. In this paper the main idea of this procedure is explained and a detailed investigation of the spin wave contribution to the temperature dependence of FMR resonance frequencies and fields is carried out.