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Tunable spin transport in CrAs: role of correlation effects

L. Chioncel·M. I. Katsnelson·G. A. de Wijs·R. A. de Groot·A. I. Lichtenstein
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Abstract

Correlation effects on the electronic structure of half-metallic CrAs in zinc-blende structure are studied for different substrate lattice constants. Depending on the substrate the spectral weight of the non-quasiparticle states might be tuned from a well developed value in the case of InAs substrate to an almost negligible contribution for the GaAs one. A piezoelectric material that would allow the change in the substrate lattice parameters opens the possibility for practical investigations of the switchable (tunable) non-quasiparticle states. Since the latter are important for the tunneling magnetoresistance and related phenomena it creates new opportunities in spintronics.

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L. Chioncel, M. I. Katsnelson, G. A. de Wijs, R. A. de Groot, A. I. Lichtenstein. 2005-01-12. Tunable spin transport in CrAs: role of correlation effects. https://doi.org/10.1103/physrevb.71.085111

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