Importance of interlayer effects for T{sub c} in {kappa}-(ET){sub 2}X superconductors.
Conference
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OSTI ID:761392
We report high-resolution measurements of the linear thermal-expansion coefficient perpendicular to the conducting planes, {alpha}{perpendicular}(T), on single crystals of the superconductors {kappa}-(ET){sub 2}X with X=I{sub 3}, CU(NCS){sub 2} and Cu[N(CN){sub 2}]Br. For all three compounds we find pronounced negative phase-transition anomalies at {Tc}. Using the Ehrenfest relation, the uniaxial-pressure coefficients of {Tc} can be determined. We find that interlayer effects are of crucial importance for {Tc} in this class of materials. Regarding also interlayer effects we compare our results with recent theories addressing the p-T phase diagram.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 761392
- Report Number(s):
- ANL/CHM/CP-102623; TRN: AH200037%%260
- Resource Relation:
- Conference: International Conference on Science and Technology of Synthetic Metals, Gastein (AT), 07/15/2000--07/21/2000; Other Information: PBD: 22 Aug 2000
- Country of Publication:
- United States
- Language:
- English
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