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arXiv · 1112.5875

Kondo effect in the presence of spin-orbit coupling

L. Isaev·D. F. Agterberg·I. Vekhter
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Abstract

We study the T=0 Kondo physics of a spin-1/2 impurity in a non-centrosymmetric metal with spin-orbit interaction. Within a simple variational approach we compute ground state properties of the system for an {\it arbitrary} form of spin-orbit coupling consistent with the crystal symmetry. This coupling produces an unscreened impurity magnetic moment and can lead to a significant change of the Kondo energy. We discuss implications of this finding both for dilute impurities and for heavy-fermion materials without inversion symmetry.

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L. Isaev, D. F. Agterberg, I. Vekhter. 2012-02-22. Kondo effect in the presence of spin-orbit coupling. https://doi.org/10.1103/physrevb.85.081107

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