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Photogalvanic effect in HgTe/CdTe topological insulator due to edge-bulk optical transitions


P.P. Aseev – – Ph.D. (Phys.-Math.), Junior Research Scientist, Kotelnikov IRE RAS (Moscow). Е-mail: V.O. Kaladzhyan – Post-graduate Student, Kotelnikov IRE RAS (Moscow). Е-mail: S.N. Artemenko – Dr.Sc. (Phys.-Math.), Kotelnikov IRE RAS (Moscow). Е-mail:

We study theoretically edge-bulk optical transitions in 2D HgTe/CdTe topological insulator (THz range). We show that electron-hole asymmetry results in spin-dependent electric dipole transitions between edge and bulk states, and we predict an occurrence of a circular photocurrent.


  1. Konig M., Buhmann H. et al. The quantum spin Hall effect: theory and experiment // J. Phys. Soc. Jpn 77. 031007. 2008.
  2. Diehl H., Shalygin V.A. et al. Nonlinear magnetogyrotropic photogalvanic effect // Physical Review B. 88. 045414. 2013.
  3. Bernevig B.A., Hughes T.L., Zhang S.-C. Quantum spin Hall effect and topological phase transition in HgTe quantum wells // Science 314. 1757. 2006.


June 24, 2020
May 29, 2020

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