INTERLAYER EXCHANGE COUPLING - THE EFFECT OF SUBSTITUTIONAL DISORDER

Authors
BRUNO P KUDRNOVSKY J DRCHAL V TUREK I
Citation
P. Bruno et al., INTERLAYER EXCHANGE COUPLING - THE EFFECT OF SUBSTITUTIONAL DISORDER, Physical review letters, 76(22), 1996, pp. 4254-4257
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
22
Year of publication
1996
Pages
4254 - 4257
Database
ISI
SICI code
0031-9007(1996)76:22<4254:IEC-TE>2.0.ZU;2-J
Abstract
The effect of substitutional disorder on the interlayer exchange coupl ing is studied, with focus on the role of the ''vertex corrections.'' It is proved, on general grounds, that, to first order, the latter do not contribute to the exchange coupling, due to exact cancellation. Th e applicability of this result for realistic systems is supported by f irst-principle calculations within the coherent potential approximatio n, for various disordered systems.