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. 2015 Nov 6;5:16197. doi: 10.1038/srep16197

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(a,b) Spectrum of the truncated Floquet Hamiltonian (Eq. (6)) in the zigzag geometry. The parameters used in (a) are: J = 1, , , , . As , the static system is a QSH insulator, with helical edge states traversing the gap. The parameters in (b) are: J = 1, , , , , , .

Inline graphic — (a,b) Spectrum of the truncated Floquet Hamiltonian (Eq. (6)) in the zigzag geometry. The parameters used in (a) are: J = 1, , , , . As , the static system is a QSH insulator, with helical edge states traversing the gap. The parameters in (b) are: J = 1, , , , , , .