Berlin 2012 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 19: Transport: Topological Insulators 2 (jointly with TT, MA)

HL 19.3: Vortrag

Montag, 26. März 2012, 15:30–15:45, H 3005

s + p - wave proximity-induced superconductivity in impure topological insulators — •Grigory Tkachov, Pauli Virtanen, Florian Foohs, Patrik Recher, and Ewelina Hankiewicz — Universität Würzburg, Germany

In contacts with conventional s-wave superconductors (Ss), topological insulators (TIs) are expected to show both s- and p-wave superconducting correlations due to the spin-momentum locking on the surface. We analyze how the impurity scattering, extended defects (e.g. interfaces) and an external magnetic field influence such mixed proximity-induced superconductivity in topological insulators. As an example, we calculate a surface magnetosupercurrent through an S/TI/S Josephson junction.