%0 Journal Article %1 PhysRevLett.122.247702 %A Hofmann, Tobias %A Helbig, Tobias %A Lee, Ching Hua %A Greiter, Martin %A Thomale, Ronny %D 2019 %I American Physical Society %J Phys. Rev. Lett. %K c %N 24 %P 247702 %R 10.1103/PhysRevLett.122.247702 %T Chiral voltage propagation and calibration in a topolectrical chern circuit %U https://link.aps.org/doi/10.1103/PhysRevLett.122.247702 %V 122 %X 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 reminiscent of the Berry flux monopole present in the admittance band structure. The active circuit elements in the TCC can be calibrated to compensate for dissipative loss.

@article{PhysRevLett.122.247702, abstract = {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 reminiscent of the Berry flux monopole present in the admittance band structure. The active circuit elements in the TCC can be calibrated to compensate for dissipative loss.}, added-at = {2019-08-14T11:08:32.000+0200}, author = {Hofmann, Tobias and Helbig, Tobias and Lee, Ching Hua and Greiter, Martin and Thomale, Ronny}, biburl = {https://www.bibsonomy.org/bibtex/260165f2d643cdf80c06fb9799a5bdb9e/ctqmat}, day = 21, description = {Chiral voltage propagation and calibration in a topolectrical chern circuit}, doi = {10.1103/PhysRevLett.122.247702}, interhash = {a70b8ef7c7982b6ad20ec7588d9aaf37}, intrahash = {60165f2d643cdf80c06fb9799a5bdb9e}, journal = {Phys. Rev. Lett.}, keywords = {c}, month = {07}, number = 24, numpages = {6}, pages = 247702, publisher = {American Physical Society}, timestamp = {2023-05-03T15:45:01.000+0200}, title = {Chiral voltage propagation and calibration in a topolectrical chern circuit}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.122.247702}, volume = 122, year = 2019 }