Please use this identifier to cite or link to this item: https://doi.org/10.1038/s42005-018-0035-2
Title: Topolectrical Circuits
Authors: Lee, C.H. 
Imhof, S.
Berger, C.
Bayer, F.
Brehm, J.
Molenkamp, L.W.
Kiessling, T.
Thomale, R.
Issue Date: 2018
Publisher: Nature Research
Citation: Lee, C.H., Imhof, S., Berger, C., Bayer, F., Brehm, J., Molenkamp, L.W., Kiessling, T., Thomale, R. (2018). Topolectrical Circuits. Communications Physics 1 (1) : 39. ScholarBank@NUS Repository. https://doi.org/10.1038/s42005-018-0035-2
Rights: Attribution 4.0 International
Abstract: Invented by Alessandro Volta and Félix Savary in the early 19th century, circuits consisting of resistor, inductor and capacitor (RLC) components are omnipresent in modern technology. The behavior of an RLC circuit is governed by its circuit Laplacian, which is analogous to the Hamiltonian describing the energetics of a physical system. Here we show that topological insulating and semimetallic states can be realized in a periodic RLC circuit. Topological boundary resonances (TBRs) appear in the impedance read-out of a topolectrical circuit, providing a robust signal for the presence of topological admittance bands. For experimental illustration, we build the Su-Schrieffer–Heeger circuit, where our impedance measurement detects the TBR midgap state. Topolectrical circuits establish a bridge between electrical engineering and topological states of matter, where the accessibility, scalability, and operability of electronics synergizes with the intricate boundary properties of topological phases. © 2018, The Author(s).
Source Title: Communications Physics
URI: https://scholarbank.nus.edu.sg/handle/10635/212373
ISSN: 23993650
DOI: 10.1038/s42005-018-0035-2
Rights: Attribution 4.0 International
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