Аннотация
Light absorption due to transitions between the edge and two-dimensional (2D) states of a 2D topological insulator (TI) is considered in the Volkov-Pankratov model. It is shown that the transitions are allowed only for the in-plane electric field orthogonal to the TI edge. It is found that the absorption is accompanied by pure spin photocurrent along the TI edge. A possibility of spin current measurement using polarized luminescence from 2D TI quantum dots is discussed.
Язык оригинала | английский |
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Номер статьи | 435303 |
Число страниц | 5 |
Журнал | Journal of Physics Condensed Matter |
Том | 29 |
Номер выпуска | 43 |
DOI | |
Состояние | Опубликовано - 27 сен 2017 |