Geometric spin dephasing of carriers with strong spin-orbit coupling

Details Geometric spin dephasing of carriers with strong spin-orbit coupling Geometric spin dephasing of carriers with strong spin-orbit coupling

2004-11-27

arxiv.org/abs/cond-mat/0411683v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

It has been shown that the geometric Berry-phase shift acquired by the components of the light hole (LH) spinor during an adiabatic collision is equal to the angular distance traveled by the wave vector. For LH, geometric dephasing leads to equality between angular and crystal momentum relaxation time. I will show that the same mechanism is completely ineffective for heavy and split-off holes in bulk crystals, and in electron QSLs in spherical nanostructures. This non-model result suggests that these carriers may be considered as the stern candidates for implementation of dissipationless spin currents (Spin Hall effect) and fault-tolerant qubits.

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