Energy current and thermal conductivity for Josephson-junction array models of granular superconductors
J. Deppe, J. L. Feldman
DOI 10.1103/PhysRevB.50.6479 · Physical Review B
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Abstract
One model of granular superconductors is based on a Josephson-junction array with capacitive, or charging, terms. As a result of having these noncommuting terms in the Hamiltonian, energy transport is possible. We have obtained an expression for the heat current for this model and have employed it in calculating the thermal conductivity κ. We find that as the temperature is lowered through the system’s order-disorder phase transition, κ increases by more than one order of magnitude. Effects of having a distribution of grain sizes are also calculated.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2 | Pressure not reported | unknown |
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