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Current noise cross correlation mediated by Majorana bound states
Hai-Feng Lu, Hai-Zhou Lu, Shun-Qing Shen
We study the transport properties of a quantum dot-Majorana hybrid system, in which each of paired Majorana bound states is connected to one quantum dot. With the help of non-equil…
Weak antilocalization and localization in disordered and interacting Weyl semimetals
Hai-Zhou Lu, Shun-Qing Shen
Using the Feynman diagram techniques, we derive the finite-temperature conductivity and magnetoconductivity formulas from the quantum interference and electron-electron interaction…
Tunable interaction-induced localization of surface electrons in antidot nanostructured Bi2Te3 thin films
Hong-Chao Liu, Hai-Zhou Lu, Hong-Tao He +7
Recently, a logarithmic decrease of conductivity has been observed in topological insulators at low temperatures, implying a tendency of localization of surface electrons. Here, we…
Weak localization and weak anti-localization in topological insulators
Hai-Zhou Lu, Shun-Qing Shen
Weak localization and weak anti-localization are quantum interference effects in quantum transport in a disordered electron system. Weak anti-localization enhances the conductivity…
Robustness of Quantum Spin Hall Effect in an External Magnetic Field
Song-Bo Zhang, Yan-Yang Zhang, Shun-Qing Shen
The edge states in the quantum spin Hall effect are expected to be protected by time reversal symmetry. The experimental observation of the quantized conductance was reported in th…
Dimensional evolution between one- and two-dimensional topological phases
Huaiming Guo, Lin Yang, Shun-Qing Shen
Dimensional evolution between one- () and two-dimensional () topological phases is investigated systematically. The crossover from a topological insulator to its …