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Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2010

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

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Abstract

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.

Dates and versions

ensl-00517370 , version 1 (14-09-2010)

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Cite

Pierre Adroguer, Charles Grenier, David Carpentier, Jérome Cayssol, Pascal Degiovanni, et al.. Probing the helical edge states of a topological insulator by Cooper-pair injection. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 82 (8), pp.081303(R). ⟨10.1103/PhysRevB.82.081303⟩. ⟨ensl-00517370⟩
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