Spin relaxation in Rashba rings

V. A. Slipko; Y. V. Pershin

doi:10.1209/0295-5075/95/37004

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arXiv · 1103.3231

Spin relaxation in Rashba rings

V. A. Slipko·Y. V. Pershin

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Abstract

Spin relaxation dynamics in rings with Rashba spin-orbit coupling is investigated using spin kinetic equation. We find that the spin relaxation in rings occurs toward a persistent spin configuration whose final shape depends on the initial spin polarization profile. As an example, it is shown that a homogeneous parallel to the ring axis spin polarization transforms into a persistent crown-like spin structure. It is demonstrated that the ring geometry introduces a geometrical contribution to the spin relaxation rate speeding up the transient dynamics. Moreover, we identify several persistent spin configurations as well as calculate the Green function of spin kinetic equation.

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BibTeX RIS

V. A. Slipko, Y. V. Pershin. 2011-03-16. Spin relaxation in Rashba rings. https://doi.org/10.1209/0295-5075%2F95%2F37004

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