Multiple asymmetric couplings induced unconventional corner mode in topolectrical circuits
We investigate the emergence of unconventional corner mode in a two-dimensional (2D) topolectrical circuits induced by asymmetric couplings. The non-Hermitian skin effect of two kinked one-dimensional (1D) lattices with multiple asymmetric couplings are explored. Then we extend to the 2D model, deri...
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| Veröffentlicht in: | New journal of physics 2024-03, Vol.26 (3), p.33004 |
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| creator | Jiang, Hengxuan Wang, Xiumei Chen, Jie Zhou, Xingping |
| description | We investigate the emergence of unconventional corner mode in a two-dimensional (2D) topolectrical circuits induced by asymmetric couplings. The non-Hermitian skin effect of two kinked one-dimensional (1D) lattices with multiple asymmetric couplings are explored. Then we extend to the 2D model, derive conditions for the non-Hermitian hybrid skin effect and show how the corner modes are formed by non-reciprocal pumping based on 1D topological modes. We provide explicit electrical circuit setups for realizing our observations via realistic LTspice simulation. Moreover, we show the time varying behaviors of voltage distributions to confirm our results. Our study may help to extend the knowledge on building the topological corner modes in the non-Hermitian presence. |
| doi_str_mv | 10.1088/1367-2630/ad2db5 |
| format | Article |
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| subjects | asymmetric coupling Asymmetry Boundary conditions Circuits corner state Couplings Electrons Lattices Localization Phase transitions Simulation Skin effect topolectrical circuits Topology Two dimensional models |
| title | Multiple asymmetric couplings induced unconventional corner mode in topolectrical circuits |
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