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Interplay between magnetism and topology in Kondo Insulators

ORAL

Abstract

Topological Kondo insulators are a rare example of an interaction-enabled topological phase of matter, making them an intriguing but also hard case for theoretical studies.
Here, we investigate the periodic Anderson model with the addition of spin orbit coupling via a fully spin-rotation invariant slave-boson treatment. Within mean-field approximation we map out the magnetic phase diagram and characterize both antiferromagnetic and paramagnetic phases by their topological properties.
Moreover, we establish the stability of the mean-field solution via Gaussian fluctuations around the saddle point by the computation of the dynamical susceptibility.

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Presenters

  • David Riegler

    University of Wuerzburg

Authors

  • David Riegler

    University of Wuerzburg

  • Michael Klett

    Institute for Theoretical Physics, University of Wuerzburg, University of Wuerzburg

  • Seulgi Ok

    University of Zurich

  • Titus Neupert

    Univ of Zurich, University of Zurich, Department of Physics, University of Zurich, Physics, University of Zurich

  • Peter K Woelfle

    Karlsruhe Institute of Technology

  • Ronny Thomale

    University of Wurzburg, Institute for Theoretical Physics, University of Wuerzburg, Theoretical physics I, University of Wuerzburg, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Physics department, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, University of Würzburg, Institute for Theoretical Physics and Astrophysics, University of Wurzburg