Premium
Magnetic polarons in magnetic semiconductors
Author(s) -
Kuivalainen P.,
Sinkkonen J.,
Stubb T.
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560200855
Subject(s) - polaron , condensed matter physics , magnetic semiconductor , ferromagnetism , semiconductor , physics , spin polarization , instability , quantum mechanics , electron
A review of the theory of magnetic polarons is given paying special attention to polarons in broad band ferromagnetic semiconductors such as some europium‐chalcogenides. The self‐consistent equations for the polaron energy and the nonuniform spin polarization around the polaron are derived in a general form from which most of the earlier treatments can be deduced as special cases. The free and bound magnetic polaron formations, stability ranges, and band width effefin the HOLE OEMPERATURE RANGE/ The formation of molecular magnetic polarons and the instability of the homogeneous state are discussed. The relation of the magnetic polarons to the magnetic a aniform spin nd electrical properties of magnetic semiconductors is discussed and the experimental evidence for magnetic polarons is summarized.