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Density of states in ordered and disordered ferromagnetic thin films
Author(s) -
Goedsche F.
Publication year - 1971
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.2220440119
Subject(s) - condensed matter physics , ferromagnetism , spectrum (functional analysis) , spin wave , spin (aerodynamics) , surface (topology) , density of states , order (exchange) , heisenberg model , physics , materials science , quantum mechanics , mathematics , geometry , finance , economics , thermodynamics
Abstract The density of spin‐wave states in ordered and disordered linear Heisenberg chains is investigated. The disorder is introduced by setting random quantities for the exchange integrals. The model also includes the effect of surface spin pinning and variations of the exchange integrals near the film faces upon the spectrum. Surface modes as well as the bulk spectrum for both types of order are discussed.