P. Adroguer, C. Grenier, D. Carpentier, J. Cayssol, P. Degiovanni, E. Orignac
Published 2010-06-01, updated 2010-08-05Version 3
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.
Comments: 5 pages, 4 figures
Journal: Phys. Rev. B 82, 081303(R) (2010)
Robustness of the helical edge states in topological insulators
Non-equilibrium Josephson effect through helical edge states
Spin filtering by helical edge states of topological insulator
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