Intrinsic Spin-Orbit Effects in Strontium Titanate

ORAL

Abstract

We have calculated spin relaxation times via the Elliott-Yafet mechanism for strontium titanate as a function of temperature. The approach uses a low-energy effective spin-orbit Hamiltonian constructed from a tight-binding model with atomic spin-orbit interactions. The intrinsic spin Hall conductivity for strontium titanate has also been calculated from the same low-energy Hamiltonian using a Berry's phase technique. Modifications to the spin relaxation and spin Hall conductivity from elastic strain at an interface will also be described. This work was supported by an ARO MURI.

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Authors

  • Cuneyt Sahin

    • Optical Science and Technology Center and Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242, USA
    • University of Iowa Department of Physics and Astronomy

  • Giovanni Vignale

    • Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA

  • Michael E. Flatt\'e

    • Optical Science and Technology Center and Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242, USA