Domain wall resistivity in diffuse ferromagnets

Authors
Brataas, A Tatara, G Bauer, GEW
Citation
A. Brataas et al., Domain wall resistivity in diffuse ferromagnets, PHIL MAG B, 78(5-6), 1998, pp. 545-548
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICSELECTRONIC OPTICAL AND MAGNETIC PROPERTIES
ISSN journal
13642812 → ACNP
Volume
78
Issue
5-6
Year of publication
1998
Pages
545 - 548
Database
ISI
SICI code
1364-2812(199811/12)78:5-6<545:DWRIDF>2.0.ZU;2-9
Abstract
We derive expressions for the resistivity of diffuse ferromagnets caused by the rotating magnetization direction in a domain wall for general band str uctures and state-dependent electron lifetimes. The domain wall resistivity is enhanced when the Fermi surfaces of the spin-up and spin-down states (n early) overlap, but in this limit the non-degenerate perturbation theory br eaks down. The results differ for constant density and constant chemical po tential and do not agree with those by Levy and Zhang (1997, Phys. Rev. Let t., 78, 3773) in the two-band model.