Dissipation in the superconducting state of κ−(BEDT−TTF)2Cu(NCS)2
Liang Yin, Moon-Sun Nam, James G. Analytis, Stephen J. Blundell, Arzhang Ardavan, John A. Schlueter, Takahiko Sasaki
DOI 10.1103/PhysRevB.76.014506 · Physical Review B
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Abstract
We have studied the interlayer resistivity of the prototypical quasi-two-dimensional organic superconductor κ−(BEDT−TTF)2Cu(NCS)2 as a function of temperature, current, and magnetic field, within the superconducting state. We find a region of nonzero resistivity whose properties are strongly dependent on magnetic field and current density. There is a crossover to non-Ohmic conduction below a temperature that coincides with the two-dimensional vortex solid–vortex liquid transition. We interpret the behavior in terms of a model of current- and thermally driven phase slips caused by the diffusive motion of the pancake vortices which are weakly coupled in adjacent layers, giving rise to a finite interlayer resistance.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure unresolved | midpoint |
| κ-(BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure unresolved | onset |
| κ-(BEDT-TTF)4Hg2.89Br8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| α-(BEDT-TTF)2NH4Hg(SCN)4 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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