Publisher DOI: 10.1103/PhysRevB.81.094438
Title: Nonmonotonic thickness dependence of spin wave energy in ultrathin Fe films: Experiment and theory
Language: English (United States)
Authors: Zhang, Y. 
Buczek, Pawel  
Sandratskii, L. M. 
Tang, W. X. 
Prokop, J. 
Tudosa, I. 
Peixoto, T. R. F. 
Zakeri, Kh. 
Kirschner, J. 
Issue Date: 31-Mar-2010
Publisher: American Physical Society
Journal or Series Name: Physical Review B - Condensed Matter and Materials Physics 
Volume: 81
Issue: 9
High wave-vector spin waves in ultrathin Fe/W(110) films up to 20 monolayers (MLs) thick have been studied using spin-polarized electron energy-loss spectroscopy. An unusual nonmonotonous dependence of the spin wave energies on the film thickness is observed, featuring a pronounced maximum at 2 ML coverage. First-principles theoretical study reveals the origin of this behavior to be in the localization of the spin waves at the surface of the film, as well as in the properties of the interlayer exchange coupling influenced by the hybridization of the electron states of the film and substrate and by the strain. © 2010 The American Physical Society.
ISSN: 1538-4489
Institute: Fakultät Technik und Informatik 
Department Informations- und Elektrotechnik 
Type: Article
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