Magnetoconductivity in the presence of Bychkov-Rashba spin-orbit interaction

Details Magnetoconductivity in the presence of Bychkov-Rashba spin-orbit interaction Magnetoconductivity in the presence of Bychkov-Rashba spin-orbit interaction

2006-06-24

arxiv.org/abs/cond-mat/0606630v1

App. Phys. Lett. 88, 252113 (2006)

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

10.1063/1.2216027

A closed-form analytic formula for the magnetoconductivity in the diffusive regime is derived in the presence of Bychkov-Rashba spin-orbit interaction in two dimensions. It is shown that at low fields B << B_{so}, where B_{so} is the characteristic field associated with spin precession, D'yakonov-Perel' mechanism leads to spin relaxation, while for B >> B_{so} spin relaxation is suppressed and the resulting spin precession contributes a Berry phase-like spin phase to the magnetoconductivity. The relative simplicity of the formula greatly facilitates data fitting, allowing for the strength of the spin-orbit coupling to be easily extracted.

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