Nonuniform Rashba-Dresselhaus spin precession along arbitrary paths

Details Nonuniform Rashba-Dresselhaus spin precession along arbitrary paths Nonuniform Rashba-Dresselhaus spin precession along arbitrary paths

2006-07-04

arxiv.org/abs/cond-mat/0607090v2

Phys. Rev. B 74, 195314 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures; derivations elaborated; to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.74.195314

Electron spin precession in nonuniform Rashba-Dresselhaus two-dimensional electron systems along arbitrary continuous paths is investigated. We derive an analytical formula to describe the spin vectors (expectation values of the injected spin) in such conditions using a contour-integral method. The obtained formalism is capable of dealing with the nonuniformity of the Rashba spin-orbit field due to the inherent random distribution of the ionized dopants, and can be applied to curved one-dimensional quantum wires. Interesting examples are given, and the modification to the spin precession pattern in a Rashba-Dresselhaus channel when taking the random Rashba field into account is shown.

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