Helical edge transport in the presence of a magnetic impurity


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Аннотация

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 nonmonotonic dependence on the voltage with several extrema.

Авторлар туралы

P. Kurilovich

Moscow Institute of Physics and Technology (State University); Skolkovo Institute of Science and Technology; Landau Institute for Theoretical Physics

Email: burmi@itp.ac.ru
Ресей, Dolgoprudnyi, Moscow region, 141701; Moscow, 143026; Moscow, 119334

V. Kurilovich

Moscow Institute of Physics and Technology (State University); Skolkovo Institute of Science and Technology; Landau Institute for Theoretical Physics

Email: burmi@itp.ac.ru
Ресей, Dolgoprudnyi, Moscow region, 141701; Moscow, 143026; Moscow, 119334

I. Burmistrov

Moscow Institute of Physics and Technology (State University); Landau Institute for Theoretical Physics; Institut für Theorie der kondensierten Materie; Institut für Nanotechnologie

Хат алмасуға жауапты Автор.
Email: burmi@itp.ac.ru
Ресей, Dolgoprudnyi, Moscow region, 141701; Moscow, 119334; Karlsruhe, 76128; Karlsruhe, 76021

M. Goldstein

Raymond and Beverly Sackler School of Physics and Astronomy

Email: burmi@itp.ac.ru
Израиль, Tel Aviv, 6997801

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