Identifying anomalous Floquet edge modes via bulk-edge correspondenceProject supported by the National Natural Science Foundation of China (Grant No. 2016YFA0301500)

Floquet engineering appears as a new protocol for designing topological states of matter, and features anomalous edge modes pinned at quasi-energy π/T with vanished topological index. We propose how to predict the anomalous edge modes via the bulk Hamiltonian in frequency space, and use Zak phase to...

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Published in:Chinese physics B 2020-04, Vol.29 (4)
Main Authors: Wang, Huanyu, Liu, Wuming
Format: Article
Language:English
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bulk-edge correspondence
Floquet energineering
Zak phase
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Liu, Wuming
description Floquet engineering appears as a new protocol for designing topological states of matter, and features anomalous edge modes pinned at quasi-energy π/T with vanished topological index. We propose how to predict the anomalous edge modes via the bulk Hamiltonian in frequency space, and use Zak phase to quantitatively index the topological properties. The above methods are clarified by the example of time periodic Kitaev chain with chemical potential of harmonic driving and pulse driving, and topological phase transitions are manifested at different driving frequencies.
doi_str_mv 10.1088/1674-1056/ab6dcb
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source Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
subjects bulk-edge correspondence
Floquet energineering
Zak phase
title Identifying anomalous Floquet edge modes via bulk-edge correspondenceProject supported by the National Natural Science Foundation of China (Grant No. 2016YFA0301500)
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