Fractional Local Moment and High Temperature Kondo Effect in Rashba-Fermi Gases

Adhip Agarwala; Vijay B. Shenoy

doi:10.1103/physrevb.93.241111

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arXiv · 1509.07328

Fractional Local Moment and High Temperature Kondo Effect in Rashba-Fermi Gases

Adhip Agarwala·Vijay B. Shenoy

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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.

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Adhip Agarwala, Vijay B. Shenoy. 2015-09-30. Fractional Local Moment and High Temperature Kondo Effect in Rashba-Fermi Gases. https://doi.org/10.1103/physrevb.93.241111

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