2010/07/22 by Bo Gu, Jing-Yu Gan, Nejat Bulut +5 · 31 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Anderson impurity model #Condensed matter physics #Coulomb #Electron #Impurity #Magnetic properties of thin films #Monte Carlo method #Physics #Quantum Hall effect #Quantum Monte Carlo #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #Renormalization #Spin (aerodynamics) #Spin Hall effect #Spin polarization #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.105.086401
published in Physical Review Letters 105(8), 086401 (American Physical Society) · 4 pages, 3 figures
arxiv created 2010/07/22 · openalex publication_date 2010/08/18 · arxiv updated 2015/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 experiments, 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.