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

C. Grenier; D. Carpentier; E. Orignac; J. Cayssol; P. Adroguer; P. Degiovanni

arxiv: 1006.0215 · v3 · pith:WQMRHDERnew · submitted 2010-06-01 · ❄️ cond-mat.mes-hall

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

P. Adroguer , C. Grenier , D. Carpentier , J. Cayssol , P. Degiovanni , E. Orignac This is my paper

classification ❄️ cond-mat.mes-hall

keywords edgesuperconductorandreevinsulatortopologicalcomputeconductanceconsider

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

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