Journal
PHYSICAL REVIEW B
Volume 102, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.102.045301
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Funding
- JSPS [JP19J13867, JP18J14172, JP18K13486]
- JSPS Program for Leading Graduate Schools (MERIT) from JSPS, JST PRESTO [JP18K13486]
- [JP18H01813]
- [JP19H05610]
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We report on electron transport in gate-tunable Corbino-geometry Josephson junctions (CJJs) fabricated from an epitaxially grown Aluminum (Al) superconductor on an InAs quantum well. We observed that a supercurrent can be tuned by the gate voltage and sweeping an out-of-plane magnetic field initiates a sudden rise in the electrical resistance. From the analysis using a theoretical model for flow resistance due to Josephson vortices in CJJs, we evaluate the vortex core size, which substantially depends on the carrier density and temperature. These results will be subsequently utilized for future operations of the Josephson vortices in CJJs.
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