Probing the helical edge states of a topological insulator by Cooper-pair injection

作者:Adroguer P*; Grenier C; Carpentier D; Cayssol J; Degiovanni P; Orignac E
来源:Physical Review B, 2010, 82(8): 081303.
DOI:10.1103/PhysRevB.82.081303

摘要

We consider the proximity effect between a singlet s-wave superconductor and the edge of a quantum spin Hall (QSH) topological insulator. We establish that Andreev reflection at a QSH edge state/superconductor interface is perfect while nonlocal Andreev processes through the superconductor are totally suppressed. We compute the corresponding conductance and noise.

  • 出版日期2010-8-5