SPIN-FLUCTUATION EFFECTS IN MAGNETIC-POLARON FORMATION

Authors
MIAO J STIRNER T HAGSTON WE
Citation
J. Miao et al., SPIN-FLUCTUATION EFFECTS IN MAGNETIC-POLARON FORMATION, Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic, 75(6), 1997, pp. 897-908
Citations number
24
Categorie Soggetti
Physics, Applied",Mechanics,"Physics, Condensed Matter","Material Science
Journal title
Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic → ACNP
ISSN journal
13642812
Volume
75
Issue
6
Year of publication
1997
Pages
897 - 908
Database
ISI
SICI code
1364-2812(1997)75:6<897:SEIMF>2.0.ZU;2-8
Abstract
Magnetic-polaron energies in various systems (e.g. donor- or acceptor- bound magnetic polarons and free magnetic polarons) are calculated and the relative importance of the spin-fluctuation term is investigated. It is found that the spin fluctuations of the magnetic ions play a di fferent role in the various kinds of magnetic-polaron complex. Futherm ore, it is demonstrated how experimental measurements, for example the magnetic field or temperature dependence of the polaron energy, can b e utilized to determine the spin state of the magnetic ions within the polaron. A clear picture of the relationship between the Mn2+ spin fl uctuations and magnetic-polaron formation is thus revealed.