Theory of spin noise in nanowires

Details Theory of spin noise in nanowires Theory of spin noise in nanowires

2011-03-30

arxiv.org/abs/1103.6040v2

Phys. Rev. Lett. 107, 156602 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Considerably revised version, includes main text and supplementary material

Scientific paper

We develop a theory of spin noise in semiconductor nanowires considered as prospective elements for spintronics. In these structures spin-orbit coupling can be realized as a random function of coordinate correlated on the spatial scale of the order of 10 nm. By analyzing different regimes of electron transport and spin dynamics, we demonstrate that the spin relaxation can be very slow and the resulting noise power spectrum increases algebraically as frequency goes to zero. This effect makes spin effects in nanowires best suitable for studies by rapidly developing spin-noise spectroscopy.

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