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

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.
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Contributor : Pascal Degiovanni <>
Submitted on : Tuesday, September 14, 2010 - 2:13:01 PM
Last modification on : Thursday, May 9, 2019 - 2:06:03 PM

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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, American Physical Society, 2010, 82 (8), pp.081303(R). ⟨10.1103/PhysRevB.82.081303⟩. ⟨ensl-00517370⟩

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