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- W3003155332 abstract "In this work, we study the entanglement and topological properties of an extended flat-band Creutz ladder by considering a compacted localized state (CLS). Based on the CLS picture, we find a multiple flat-band extension from the conventional two flat-band Creutz ladder. A simple vertical inter-chain coupling leads to a four complete flat-band system and creates an additive $pi$-flux pattern on the Creutz ladder. Interestingly, the strong coupling induces a topological phase transition where the distribution of CLSs is modified: upper and lower flat-band CLSs are paired up. This pairing leads to the destruction of the CLS' entanglement and, hence, to a vanishing edge mode (i.e., the breakdown of non-trivial topological phase). Finally, we study the localization dynamics induced by the presence of complete flat bands in this extended flat-band system." @default.
- W3003155332 created "2020-02-07" @default.
- W3003155332 creator A5015998729 @default.
- W3003155332 date "2020-05-15" @default.
- W3003155332 modified "2023-10-18" @default.
- W3003155332 title "Extended flat band, entanglement, and topological properties in a Creutz ladder" @default.
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- W3003155332 doi "https://doi.org/10.1103/physrevb.101.184112" @default.
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