Probing the order parameter of the layered organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br by ac susceptibility measurements
M. Pinterić, S. Tomić, M. Prester, D. Drobac, O. Milat, K. Maki, D. Schweitzer, I. Heinen, W. Strunz
DOI 10.1103/PhysRevB.61.7033 · Physical Review B
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Abstract
ac susceptibility measurements are reported for single crystals of the layered organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br. The value of the out-of-plane penetration depth λb(0) was found to be 133 μm, consistent with earlier results. The temperature dependence of the in-plane superfluid density, with the value of in-plane component λac(0) of the order of 1 μm, is strongly linear in T, whereas the out-of-plane superfluid density varies as T2 at low temperatures. The observed behavior is fully consistent with the one expected for d-wave superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (BEDT-TTF)2CuN(CN)2Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12.4 | Pressure unresolved | onset |
| (BEDT-TTF)2CuN(CN)2Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11.2 | Pressure unresolved | onset |
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