Collective spin modes in magnetized spin-orbit coupled 3D polar metals

ORAL

Abstract

We study collective spin modes emerging in spin-orbit coupled 3D polar metals due to electron-electron and electron-phonon interactions in the presence of Zeeman field. Zeeman splitting (generated by applied magnetic field or magnetic doping) leads to the emergence of collective electronic modes already at weak coupling. These modes possess unusual dispersion characteristics that can be controlled by magnetic field orientation. We discuss their experimental signatures and behavior in polar metals close to a quantum critical point.

*This work was partially supported by DOE Basic Energy Sciences grant DE-SC0020353(P.C. and A.K), Natural Sciences and Engineering Research Council of Canada (NSERC) under grant RGPIN-2019-05312 (A.K.) and a Rutgers Center for Materials Theory Abrahams Fellowship (P.A.V.).

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Presenters

  • Abhishek Kumar

    • Rutgers University; Universite de Sherbrooke

Authors

  • Abhishek Kumar

    • Rutgers University; Universite de Sherbrooke

  • Premala Chandra

    • Rutgers University

  • Pavel Volkov

    • Harvard University; University of Connecticut
    • Rutgers University
    • Harvard University; University of Connecticut; Rutgers University