Double Exchange and Small-Polaron Hopping in Magnetic Semiconductors
- 1 January 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 42 (1) , 71-74
- https://doi.org/10.1103/physrevlett.42.71
Abstract
A many-electron approach to double exchange which explicitly considers the indistinguishability of mobile and valence electrons has been developed. The theory is applied to small-polaron motion in magnetic systems. The temperature dependence of the small-polaron mobility in antiferromagnets is shown to differ significantly from that in paramagnets and ferromagnets.Keywords
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