Quantum Renormalization of the Spin Hall Effect

Abstract

By quantum Monte Carlo simulation of a realistic multiorbital Anderson impurity model, we study the spin-orbit interaction (SOI) of an Fe impurity in Au host metal. We show, for the first time, that the SOI is strongly renormalized by the quantum spin fluctuation. Based on this mechanism, we can explain why the gigantic spin Hall effect in Au with Fe impurities was observed in recent experiment, while it is not visible in the anomalous Hall effect. In addition, we show that the SOI is strongly renormalized by the Coulomb correlation U. Based on this picture, we can explain past discrepancies in the calculated orbital angular momenta for an Fe impurity in an Au host.

4 pages, 3 figures

References in corpus (3)

• Kondo decoherence: finding the right spin model for iron impurities in gold and silver
• Enhanced spin Hall effect by resonant skew scattering in orbital-selective Kondo effect
• Orbital magnetism in transition-metal systems: The role of local correlation effects

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• Deformation of the Fermi Surface and Anomalous Mass Renormalization by Critical Spin Fluctuations through Asymmetric Spin-Orbit Interaction
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• Anomalous enhancement of spin Hall conductivity in superconductor/normal metal junction