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arXiv · 2001.10842

Predicting Large-Chern-Number Phases in a Shaken Optical Dice Lattice

Shujie Cheng·Honghao Yin·Zhanpeng Lu·Chaocheng He·Pei Wang·Gao Xianlong
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Abstract

With respect to the quantum anomalous Hall effect (QAHE), the detection of topological nontrivial large-Chern-number phases is an intriguing subject. Motivated by recent research on Floquet topological phases, this study proposes a periodic driving protocol to engineer large-Chern-number phases using QAHE. Herein, spinless ultracold fermionic atoms are studied in a two-dimensional optical dice lattice with nearest-neighbor hopping and a $\Lambda$/V-type sublattice potential subjected to a circular driving force. Results suggest that large-Chern-number phases exist with Chern numbers equal to $C=-2$, which is consistent with the edge-state energy spectra.

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Shujie Cheng, Honghao Yin, Zhanpeng Lu, Chaocheng He, Pei Wang, Gao Xianlong. 2020-01-29. Predicting Large-Chern-Number Phases in a Shaken Optical Dice Lattice. https://doi.org/10.1103/physreva.101.043620

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