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

@article{Adroguer2010ProbingTH, title={Probing the helical edge states of a topological insulator by Cooper-pair injection}, author={Pierre Adroguer and Charles Grenier and David Carpentier and J Cayssol and P Degiovanni and Edmond Orignac}, journal={Physical Review B}, year={2010}, volume={82}, pages={081303} }

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.

## 36 Citations

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