Tunable spin transport in CrAs: role of correlation effects

Details Tunable spin transport in CrAs: role of correlation effects Tunable spin transport in CrAs: role of correlation effects

2005-01-12

arxiv.org/abs/cond-mat/0501279v1

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 3 figures, 2 tables. accepted PRB 71, 1 (2005)

Scientific paper

10.1103/PhysRevB.71.085111

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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