Fractional Local Moment and High Temperature Kondo Effect in Rashba-Fermi Gases
arXiv:1509.07328 · doi:10.1103/PhysRevB.93.241111
Abstract
We investigate the new physics that arises when a correlated quantum impurity hybridizes with Fermi gas with a generalized Rashba spin-orbit coupling produced via a uniform synthetic non-Abelian gauge field. We show that the impurity develops a {\it fractional} local moment which couples anti-ferromagnetically to the Rashba-Fermi gas. This results in a concomitant {\it Kondo effect with a high temperature scale} that can be tuned by the strength of the Rashba spin-orbit coupling.
5 pages, 4 figures, and supplemental material(4 pages); typos fixed
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