Kondo effect in the presence of spin-orbit coupling

Details Kondo effect in the presence of spin-orbit coupling Kondo effect in the presence of spin-orbit coupling

2011-12-26

arxiv.org/abs/1112.5875v2

Phys. Rev. B85, 081107(R) (2012)

Physics

Condensed Matter

Strongly Correlated Electrons

TeXLive (Unix), revtex4-1, 5 pages

Scientific paper

10.1103/PhysRevB.85.081107

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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