Motion of a Josephson vortex under a temperature gradient
A. A. Golubov, G. Yu. Logvenov
DOI 10.1103/PhysRevB.51.3696 · Physical Review B
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Abstract
A theory of a Josephson vortex motion under a temperature gradient is presented. Microscopic calculations of the temperature dependence of a Josephson vortex transport entropy, Scphi, are done in the whole temperature range. It is shown that Scphi→0 as T→0 and Tc. Results of the theory are compared with our experimental data for superconductor–normal-metal–superconductor (SNS) and superconductor-insulator-superconductor Josephson junctions. The value of a transport entropy obtained from our experiments is in good agreement with theoretical estimates. An additional maximum of the transport entropy has been found experimentally in long SNS junctions with dN/ξN≫1. This result is explained in the framework of the microscopic model presented in the paper.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ta/Cu/Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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