Helical edge transport in the presence of a magnetic impurity

  • P. D. Kurilovich
  • V. D. Kurilovich
  • I. S. Burmistrov
  • M. Goldstein
Article
  • 22 Downloads

Abstract

We consider the effects of electron scattering off a quantum magnetic impurity on the current-voltage characteristics of the helical edge of a two-dimensional topological insulator. We compute the backscattering contribution to the current along the edge for a general form of the exchange interaction matrix and arbitrary value of the magnetic impurity spin. We find that the differential conductance may exhibit a non-monotonous dependence on the voltage with several extrema.

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Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • P. D. Kurilovich
    • 1
    • 2
    • 3
  • V. D. Kurilovich
    • 1
    • 2
    • 3
  • I. S. Burmistrov
    • 1
    • 3
    • 4
    • 5
  • M. Goldstein
    • 6
  1. 1.Moscow Institute of Physics and TechnologyMoscowRussia
  2. 2.Skolkovo Institute of Science and TechnologyMoscowRussia
  3. 3.L.D. Landau Institute for Theoretical Physics RASMoscowRussia
  4. 4.Institut für Theorie der kondensierten MaterieKarlsruhe Institute of TechnologyKarlsruheGermany
  5. 5.Institut für NanotechnologieKarlsruhe Institute of TechnologyKarlsruheGermany
  6. 6.Raymond and Beverly Sackler School of Physics and AstronomyTel Aviv UniversityTel AvivIsrael

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