University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Friday, May 4th 2018
12:20 pm:
Speaker: Gino Graziano, University of Minnesota
Subject: Towards Microwave Studies of Josephson Junctions Based on InAs Quantum Wells with an Epitaxial Superconductor

Two-dimensional electron gases (2DEGs) with strong spin-orbit coupling are expected to host topological states in the presence of superconductivity and broken time-reversal symmetry. Josephson junctions based on such 2DEGs are predicted to exhibit an unconventional current-phase relation, characterized by a component at twice the Josephson frequency due to the presence of gapless topological Andreev bound states. In order to study the current-phase relation of these bound states, progress towards characterization of the microwave response of Josephson junctions based on InAs quantum wells proximitized with epitaxial Al.

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