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Reciprocal skin effect and its realization in a topolectrical circuit

ORAL

Abstract

The non-Hermitian Skin effect constitutes a new paradigm in synthetic metamaterial research. The established notion of the Skin effect requires specifically tailored gain and loss conspiring with the breaking of reciprocity. In this talk we present a model which shows extensive eigenmode localization at its boundaries while preserving reciprocity. In contrast to non-reciprocal implementations of the Skin effect requiring external energy supply, this model can be realized with exclusively passive components. We demonstrate this novel phenomenon in a passive RLC circuit network. The reciprocal Skin effect suggests itself for realizations in further metamaterial platforms with limited availability of active components.

[1] T. Hofmann, et al., arxiv:1908.02759 (2019)
[2] T. Helbig, et al., arxiv:1907.11619 (2019)
[3] T. Hofmann, et al., Phys. Rev. Lett. 122, 247702 (2019)
[4] T. Helbig, et al., Phys. Rev. B 99, 161114 (2019)
[5] S. Imhof, et al., Nature Physics 14, 925 (2018)
[6] C. H. Lee, et al., Commun. Phys. 1, 39 (2018)

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Presenters

  • Tobias Hofmann

    Theoretical physics I, University of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University of Wurzburg, University of Wurzburg

Authors

  • Tobias Hofmann

    Theoretical physics I, University of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University of Wurzburg, University of Wurzburg

  • Tobias Helbig

    Theoretical physics I, University of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University of Wurzburg, University of Wurzburg

  • Frank Schindler

    University of Zurich, Department of Physics, University of Zurich

  • Ching Hua Lee

    Department of Physics, National University of Singapore, National University of Singapore

  • Martin Greiter

    Institute for Theoretical Physics and Astrophysics, University of Wurzburg, University of Wurzburg

  • Titus Neupert

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

  • 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