Effects of randomness on the critical temperature in quasi-two-dimensional organic superconductors
Enver Nakhmedov, Oktay Alekperov, Reinhold Oppermann
DOI 10.1103/PhysRevB.86.214513 · Physical Review B
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Abstract
The effects of nonmagnetic disorder on the critical temperature Tc of organic weak-linked layered superconductors with singlet in-plane pairing are considered. A randomness in the interlayer Josephson coupling is shown to destroy phase coherence between the layers, and Tc suppresses smoothly in a large extent of the disorder strength. Nevertheless, the disorder of arbitrarily high strength cannot destroy completely the superconducting phase. The obtained quasilinear decrease of the critical temperature with increasing disorder strength is in good agreement with experimental measurements.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(BEDT-TTF)2Cu[N(CN)2]Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| κ-(ET)2Cu(SCN)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.5 | Pressure not reported | unknown |
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