Spin wave excitations: The main source of the temperature dependence of Interlayer exchange coupling in nanostructures
Strongly Correlated Electrons
2009-11-11 v1
Abstract
Quantum mechanical calculations based on an extended Heisenberg model are compared with ferromagnetic resonance (FMR) experiments on prototype trilayer systems Ni_7/Cu_n/Co_2/Cu(001) in order to determine and separate for the first time quantitatively the sources of the temperature dependence of interlayer exchange coupling. Magnon excitations are responsible for about 75% of the reduction of the coupling strength from zero to room temperature. The remaining 25% are due to temperature effects in the effective quantum well and the spacer/magnet interfaces.
Keywords
Cite
@article{arxiv.cond-mat/0612568,
title = {Spin wave excitations: The main source of the temperature dependence of Interlayer exchange coupling in nanostructures},
author = {S. Schwieger and J. Kienert and K. Lenz and J. Lindner and K. Baberschke and W. Nolting},
journal= {arXiv preprint arXiv:cond-mat/0612568},
year = {2009}
}
Comments
accepted for publication in PRL