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Edge absorption and circular photogalvanic effect in 2D topological insulator edges

  • Condensed Matter
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Abstract

The electron absorption on the edge states and the edge photocurrent of a 2D topological insulator (TI) are studied. We consider the optical transitions within linear edge branches of the energy spectrum. The interaction with impurities is taken into account. The circular polarization is found to produce the edge photocurrent, the direction of which is determined by light polarization and edge orientation.

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Authors and Affiliations

  1. Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    M. V. Entin & L. I. Magarill

  2. Novosibirsk State University, Novosibirsk, 630090, Russia

    M. V. Entin & L. I. Magarill

Authors
  1. M. V. Entin
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  2. L. I. Magarill
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Correspondence to M. V. Entin.

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Entin, M.V., Magarill, L.I. Edge absorption and circular photogalvanic effect in 2D topological insulator edges. Jetp Lett. 103, 711–716 (2016). https://doi.org/10.1134/S0021364016110047

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  • DOI: https://doi.org/10.1134/S0021364016110047

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