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

Yi-Xiang Wang () and Ya-Min Wu

The European Physical Journal B: Condensed Matter and Complex Systems, 2014, vol. 87, issue 10, 1-7

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. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1140/epjb/e2014-50291-1

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