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TT: Fachverband Tiefe Temperaturen
TT 51: Superconductivity: Tunneling, Josephson Junctions, SQUIDs
TT 51.10: Talk
Wednesday, March 9, 2016, 17:30–17:45, H19
Self-heating in Josephson junction chains: new insight from old circuits — •Jared Cole1, Michael Marthaler2, and Timothy Duty3 — 1Chemical and Quantum Physics, School of Applied Sciences, RMIT University, Melbourne, Victoria 3001, Australia — 2Institute für Theoretische Festkörperphysik, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany — 3Centre for Engineered Quantum Systems (EQuS), School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
The conduction properties of arrays of Josephson junctions are been studied for decades, yet the experimental results never really match the predictions of the idealised theoretical models. Many reasons have been given for this, including imperfections in the measurement, in the fabrication process or in the theoretical models used. Recently, using a combination of systematic numerical and experimental studies, the gap between theory and experiment is closing. As an example of this, we discuss the role of self-heating in the transport properties of one-dimensional Josephson junction chains. We show tantalising experimental measurements and how these can be compared to various theoretical models for the self-heating processes within the chains.