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Valley-spin polarization in the magneto-optical response of square lattice

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Abstract

In this work, we try to investigate the magneto-optical response of the square lattice model, in which the quantum spin Hall effect will occur when spin is introduced to the anisotropy next-nearest-neighboring hoppings. In the presence of Landau level quantization, we analyze the optical absorption spectrum and reveal the valley-spin polarization of the electrons when the total filling factor in the system changes. We also study the optical Hall conductivity behavior to find the signatures of valley-spin polarization. The implications of our results are discussed.

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Authors and Affiliations

  1. School of Science, Jiangnan University, Wuxi, 214122, P.R. China

    Yi-Xiang Wang & Ya-Min Wu

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  1. Yi-Xiang Wang
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  2. Ya-Min Wu
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Correspondence to Yi-Xiang Wang.

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Wang, YX., Wu, YM. Valley-spin polarization in the magneto-optical response of square lattice. Eur. Phys. J. B 87, 241 (2014). https://doi.org/10.1140/epjb/e2014-50291-1

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