Experimental design and theoretical model building for higher-order topological insulators

ORAL

Abstract

Higher-order topological states establish a new complexity class of topological matter. The contemporary challenge is to devise experimental scenarios in which such exotic states of matter can unfold. We report on a synthetic topological matter realization of a quadrupolar topological insulator in a topolectrical circuit array [Imhof et al., Nature Physics 14, 925 (2018)]. Transcending from specific realizations of this phenomenon, we attempt to draw a line to previous observations of dimensional edge mode hierarchies [Sessi et al., Science 354, 1269 (2016)] before the field's terminology first emerged in 2017.

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Presenters

  • Ronny Thomale

    Institute for Theoretical Physics and Astrophysics, University of Wuerzburg, University of Wurzburg, Institute for theoretical physics, University of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University Wuerzburg, Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Univ of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University of Würzburg, Institute for Theoretical Physics, University of Wuerzburg, Univ of Wurzburg

Authors

  • Ronny Thomale

    Institute for Theoretical Physics and Astrophysics, University of Wuerzburg, University of Wurzburg, Institute for theoretical physics, University of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University Wuerzburg, Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Univ of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University of Würzburg, Institute for Theoretical Physics, University of Wuerzburg, Univ of Wurzburg