| Identifying anomalous Floquet edge modes via bulk-edge correspondence |
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| 作者姓名： | 王寰宇 刘伍明 |
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| 作者单位： | Beijing National Laboratory for Condensed Matter Physics;School of Physical Sciences;Songshan Lake Materials Laboratory |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.2016YFA0301500)。 |
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| 摘 要： | 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.
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| 关 键 词： | FLOQUET energineering bulk-edge CORRESPONDENCE Zak phase |
Identifying anomalous Floquet edge modes via bulk-edge correspondence |
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| Huanyu Wang,Wuming Liu.Identifying anomalous Floquet edge modes via bulk-edge correspondence[J].Chinese Physics B,2020(4):434-438. |
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| Authors: | Huanyu Wang Wuming Liu |
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| Institution: | (Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China) |
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