Anisotropic magnetoresistance for (111) SrTiO3 surfaces within Boltzmann transport theory

ORAL

Abstract

2D electron gases formed at (111) surfaces and interfaces of SrTiO3 are highly sensitive to application of in-plane magnetic fields. Motivated by recent magnetoresistance experiments which report different crystalline symmetry components appearing at different gate voltages, we derive a multi-orbital single-layer Hamiltonian which includes spin-orbit coupling, orbital Rashba and broken inversion symmetry at the surface. The anisotropic magnetoresistance is calculated by solving the Boltzmann equation. An explanation for the experimental results observed for SrTiO3 is devised.

*This work was supported by the Natural Sciences and Engineering Research Council of Canada and the Canadian Institute for Advanced Research. NB acknowledges support from the Fonds de Recherche du Québec - Nature et Technologies.

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Presenters

  • Nazim Boudjada

    • Department of Physics, University of Toronto
    • University of Toronto

Authors

  • Nazim Boudjada

    • Department of Physics, University of Toronto
    • University of Toronto

  • Ilia Khait

    • Department of Physics, University of Toronto
    • University of Toronto

  • Arun Paramekanti

    • Department of Physics, University of Toronto
    • University of Toronto
    • Department of Physics and Centre for Quantum Materials, University of Toronto