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Spin relaxation in narrow wires of a two-dimensional electron gas

Peter Schwab·Michael Dzierzawa·Cosimo Gorini·Roberto Raimondi
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Abstract

How does an initially homogeneous spin-polarization in a confined two-dimensional electron gas with Rashba spin-orbit coupling evolve in time? How does the relaxation time depend on system size? We study these questions for systems of a size that is much larger than the Fermi wavelength, but comparable and even shorter than the spin relaxation length. Depending on the confinement spin-relaxation may become faster or slower than in the bulk. An initially homogeneously polarized spin system evolves into a spiral pattern.

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Peter Schwab, Michael Dzierzawa, Cosimo Gorini, Roberto Raimondi. 2006-06-08. Spin relaxation in narrow wires of a two-dimensional electron gas. https://doi.org/10.1103/physrevb.74.155316

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