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TT: Fachverband Tiefe Temperaturen

TT 66: Superconductivity: Tunneling, Josephson Junctions, SQUIDs

TT 66.5: Vortrag

Mittwoch, 18. März 2015, 16:00–16:15, H 2053

The parity effect in a Jospehson junction array — Jared Cole¹, Andreas Heimes², and •Michael Marthaler² — ¹Chemical and Quantum Physics, School of Applied Sciences, RMIT University, Melbourne, Victoria 3001, Australia — ²Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany

We study transport in a Josephson junction array for small Josephson energies. For very small Josephson energy the transport is dominated by single quasiparticle tunneling. We consider a regime where there is enough energy to inject quasiparticles by breaking a cooper-pair, but transport inside of the array is dominated by the parity effect. This means that the current is caried by a small number of quasiparticles above the gap. We observer the crossover temperature T^*, which is also known from parity experiments in superconducting single electron transistors.