Chiral Voltage Propagation and Calibration in a Topolectrical Chern Circuit.

  title={Chiral Voltage Propagation and Calibration in a Topolectrical Chern Circuit.},
  author={Tobias Hofmann and Tobias Helbig and Ching Hua Lee and Martin Greiter and Ronny Thomale},
  journal={Physical review letters},
  volume={122 24},
We propose an electric circuit array with topologically protected unidirectional voltage modes at its boundary. Instead of external bias fields or Floquet engineering, we employ negative impedance converters with current inversion (INICs) to accomplish a nonreciprocal, time-reversal symmetry-broken electronic network we call a topolectrical Chern circuit (TCC). The TCC features an admittance bulk gap fully tunable via the resistors used in the INICs, along with a chiral voltage boundary mode… 

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