Spin-dependent phenomena in digital-magnetic heterostructures: Clustering and phase-space filling effects

Citation
Jc. Egues et Jw. Wilkins, Spin-dependent phenomena in digital-magnetic heterostructures: Clustering and phase-space filling effects, PHYS REV B, 58(24), 1998, pp. R16012-R16015
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
0163-1829 → ACNP
Volume
58
Issue
24
Year of publication
1998
Pages
R16012 - R16015
Database
ISI
SICI code
0163-1829(199812)58:24<R16012:SPIDHC>2.0.ZU;2-3
Abstract
Digital-magnetic heterostructures (DMH's), II-VI quantum wells with "planes " of Mn, exhibit strongly spin-dependent physics. We investigate the magnet ic-field (B) dependence of exchange-induced energy splittings and spin-flip scattering in DMH's. We find that Mn clustering is relevant to explain the magnitude and the concentration dependence of recently observed splittings . Our calculated electron spin-Rip times show "branching," i.e., tau(sf)(up -->down) decreases and tau(sf)(down-->up) increases with increasing B. This feature, consistent with recent data, is due to the B-field dependence of the available phase space. [S0163-1829(98)51848-6].