On the electron scattering and dephasing by the nuclear spins
A.M. Dyugaev, I.D. Vagner, P. Wyder
TL;DR
This paper investigates how nuclear spins influence electron scattering and dephasing in metals, revealing limits on electron mean free paths and the impact of nuclear spin properties on quantum coherence.
Contribution
It introduces a theoretical analysis of hyperfine interactions and quadrupole couplings affecting electron transport and dephasing in metals.
Findings
Nuclear spins can limit electron mean free paths in clean metals.
Higher nuclear spin values (s > 1/2) cause significant dephasing in dirty metals.
Quadrupole coupling to impurities enhances dephasing effects.
Abstract
We show that scattering of the conduction electrons by nuclear spins via the hyperfine interaction may lead the upper limit on the mean free path in clean metals. Nuclear spins with s >1/2 may cause a strong dephasing in dirty limit due to the quadrupole coupling to the random potential fluctuations caused by static impurities and lattice imperfections.
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Taxonomy
TopicsQuantum and electron transport phenomena · Surface and Thin Film Phenomena · Magnetic properties of thin films