Indirect exchange interaction in extremely non-parabolic zero-gap semiconductors
- 30 April 1980
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 13 (12) , 2347-2360
- https://doi.org/10.1088/0022-3719/13/12/016
Abstract
The indirect exchange interaction between two localised magnetic moments is calculated for Hg1-xMnxTe alloys near the zero-gap semiconductor transition. For such Mn concentrations the non-parabolic effects are overwhelming and have been accounted for properly. The electron-heavy-hole virtual transitions are shown to be larger than the electron-light-hole transitions. The net exchange integral is antiferromagnetic; the numerical value of the Curie-Weiss temperature is calculated and compared with experimental determinations.Keywords
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