Temporal processes in a polymeric anion-based organic superconductor
T. F. Stalcup, J. S. Brooks, R. C. Haddon
DOI 10.1103/PhysRevB.60.9309 · Physical Review B
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Abstract
We have studied the time-dependent resistivity of κ−(BEDT−TTF)2Cu[N(CN)2]Br, a high transition temperature organic superconductor (Tc=11.6 K), in the temperature range 60–85 K. Based on these measurements, we identify an important parameter (in terms of time-dependent changes in resistivity) that is directly correlated to the superconducting transition temperature and also to the amplitude of the quantum oscillations associated with the Shubnikov–de Haas effect. This finding sheds new light on mechanisms involving disorder in this material. We describe a two-level model that accounts for the details of the time-dependent changes in resistivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (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. | 11.6 | Pressure unresolved | unknown |
| (BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.4 | Pressure not reported | unknown |
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