Magnons and Magnon-Phonon Interactions in Iron

R. F. Sabiryanov and S. S. Jaswal
Phys. Rev. Lett. 83, 2062 – Published 6 September 1999
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Abstract

First-principle studies of magnons and magnon-phonon interactions are carried out in bcc and fcc iron in the adiabatic approximation. It is shown that the phonons have a minor effect on magnons in bcc Fe and thus the lattice vibrations make a small contribution to the Curie temperature. fcc Fe is unstable against magnon excitations but the phonons seem to reduce this instability. The magnon-phonon interactions are analyzed in terms of the pair-exchange interaction variations as functions of the interatomic distances. The fcc results suggest that metastable fcc Fe in thin-film or nanostructure form should have interesting magnetic properties.

  • Received 21 December 1998

DOI:https://doi.org/10.1103/PhysRevLett.83.2062

©1999 American Physical Society

Authors & Affiliations

R. F. Sabiryanov and S. S. Jaswal

  • Behlen Laboratory of Physics and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588-0111

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Issue

Vol. 83, Iss. 10 — 6 September 1999

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