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Anisotropic susceptibilities of thin ferromagnetic films within many‐body Green's function theory
Author(s) -
Fröbrich P.,
Kuntz P. J.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301967
Subject(s) - condensed matter physics , anisotropy , ferromagnetism , paramagnetism , spin (aerodynamics) , function (biology) , physics , monolayer , transverse plane , magnetic anisotropy , materials science , magnetic field , quantum mechanics , magnetization , nanotechnology , thermodynamics , structural engineering , evolutionary biology , biology , engineering
Transverse and parallel static susceptibilities of in‐plane uniaxial anisotropic ferromagnetic films are calculated using a Heisenberg model within the framework of many‐body Green's function theory. The importance of collective magnetic excitations, in particular in the paramagnetic regime, is demonstrated by comparing with mean field calculations. The paper extends the work of Jensen et al. [1] on the monolayer with spin 1/2 to the multilayer case with arbitrary spin. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)