Probing the current-phase relation of graphene Josephson junctions using microwave measurements
Felix E. Schmidt, Mark D. Jenkins, Kenji Watanabe, Takashi Taniguchi, and Gary A. Steele
TL;DR
This paper investigates the current-phase relation in graphene Josephson junctions through microwave measurements, comparing diffusive and ballistic types at different temperatures to understand their superconducting properties.
Contribution
It introduces a method to reconstruct the current-phase relation in graphene Josephson junctions using microwave techniques, highlighting differences between diffusive and ballistic regimes.
Findings
Reconstructed current-phase relations for diffusive and ballistic junctions.
Identified temperature-dependent differences in junction behavior.
Provided insights into superconducting transport in graphene devices.
Abstract
We perform extensive analysis of graphene Josephson junctions embedded in microwave circuits. By comparing a diffusive junction at 15 mK with a ballistic one at 15 mK and 1 K, we are able to reconstruct the current-phase relation.
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Taxonomy
TopicsQuantum and electron transport phenomena · Quantum Information and Cryptography · Mechanical and Optical Resonators