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Realization of higher-order topology in bilayer asymmetric Su–Schrieffer–Heeger topological electric circuits

Authors: Shengqun Guo; Jinke Huang; Ruimin Huang; Fengjiang Zhuang; Shaojian Su; Zhili Lin; Weibin Qiu; +2 Authors

Realization of higher-order topology in bilayer asymmetric Su–Schrieffer–Heeger topological electric circuits

Abstract

In this Letter, we report on the realization of higher-order topology in electric circuit systems by generalizing the two-dimensional asymmetric Su–Schrieffer–Heeger (SSH) model to a bilayer model, which consists of two monolayer models that are directly coupled. Such a system inherits the topological properties of its monolayer counterparts and exhibits the existence of split edge states and corner states in a finite size. As well, the number of topological states is doubled due to the mirror-stacking operation. This work substantiates the existence of rich topological states in bilayer asymmetric SSH electric circuits and may inspire further research into higher-order topological insulators in artificial topological systems.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Average
Top 10%
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