Dresden 2014 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 17: Superconductivity: Tunnelling, Josephson Junctions, SQUIDs
TT 17.11: Vortrag
Montag, 31. März 2014, 17:45–18:00, HSZ 201
Quantum transport signatures of chiral edge states in Sr2RuO4 — •Rakesh Tiwari1, W Belzig2, M Sigrist3, and C Bruder1 — 1Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland — 2Department of Physics, University of Konstanz, D-78457 Konstanz, Germany — 3Theoretical Physics, ETH Zurich, CH-8093 Zurich, Switzerland
We investigate transport properties of a double quantum dot based Cooper pair splitter, where the superconducting lead consists of Sr2RuO4. The proposed device can be used to explore the symmetry of the superconducting order parameter in Sr2RuO4 by testing the presence of gapless chiral edge states, which are predicted to exist if the bulk superconductor is described by a chiral p–wave state. The odd orbital symmetry of the bulk order parameter ensures that we can realize a regime where the electrons tunneling into the double dot system come from the chiral edge states and thereby leave their signature in the conductance. The proposed Cooper pair splitter has the potential to probe order parameters in unconventional superconductors.