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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Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 82 (8), pp.081303(R). 〈10.1103/PhysRevB.82.081303〉
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00517370
Contributeur : Pascal Degiovanni <>
Soumis le : mardi 14 septembre 2010 - 14:13:01
Dernière modification le : jeudi 19 avril 2018 - 14:54:03

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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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