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Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2012

Probability- and spin-current operators for effective Hamiltonians

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Abstract

We present a systematic construction of the probability-and spin-current operators, based on a momentum power expansion of effective Hamiltonians. These operators play an essential role in transport problems related to semiconductor heterostructures, in particular when spin-orbit interaction is taken into account. The result, valid whatever the momentum power and including the linear (Bychkov-Rashba) term as well as the cubic (Dresselhaus or D'yakonov-Perel) term, is of special importance for spintronics.

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hal-01068335 , version 1 (25-09-2014)

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Federico Bottegoni, H. -J. Drouhin, Guy Fishman, J. -E. Wegrowe. Probability- and spin-current operators for effective Hamiltonians. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 85, pp.235313. ⟨10.1103/PhysRevB.85.235313⟩. ⟨hal-01068335⟩
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