The reciprocal skin effect and its realization in a topolectric circuit

ORAL

Abstract

The non-Hermitian skin effect constitutes a new paradigm in the research and design of synthetic metamaterials. It fundamentally relies on the combined breaking of Hermiticity and reciprocity. In this talk, we present the novel approach of obtaining extensive eigenmode localization in the presence of reciprocity. In contrast to non-reciprocal implementations of the Skin effect which require an external energy supply, our approach can be implemented by exclusively passive components. We demonstrate this in a passive RLC circuit network. The reciprocal Skin effect suggests itself for realizations in a plethora of metamaterial platforms with limited availability of active components.

*The work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID 258499086 - SFB 1170 and through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter – ct.qmat Project-ID 39085490 - EXC 2147. It is additionally supported by a Ph.D. scholarship of the Studienstiftung des deutschen Volkes.

–

Publication: [1] Tobias Helbig, Tobias Hofmann, Ching Hua Lee, Ronny Thomale, Stefan Imhof, Laurens W. Molenkamp, and Tobias Kiessling. Phys. Rev. B 99, 161114 (2019).
[2] Tobias Helbig, Tobias Hofmann, Stefan Imhof, Mohamed Abdelghany, Tobias Kiessling, Laurens W. Molenkamp, Ching Hua Lee, Alexander Szameit, Martin Greiter, and Ronny Thomale. Nature Physics volume 16, pages 747–750 (2020).
[3] Tobias Hofmann, Tobias Helbig, Frank Schindler, Nora Salgo, Marta Brzezińska, Martin Greiter, Tobias Kiessling, David Wolf, Achim Vollhardt, Anton Kabaši, Ching Hua Lee, Ante Bilušić, Ronny Thomale, and Titus Neupert. Phys. Rev. Res. 2, 023265 (2020).

Presenters

  • Tobias Helbig

    • Julius-Maximilians University of Wuerzburg

Authors

  • Tobias Helbig

    • Julius-Maximilians University of Wuerzburg

  • Tobias Hofmann

    • Julius-Maximilians University of Wuerzburg

  • Ching Hua Lee

    • Department of Physics, National University of Singapore, Singapore
    • National University of Singapore
    • National University Of Singapore

  • Martin Greiter

    • Julius-Maximilians University of Wuerzburg

  • Titus Neupert

    • Univ of Zurich
    • University of Zurich
    • University of Zürich

  • Ronny Thomale

    • Julius-Maximilians University of Wuerzburg