Superconductivity in the charge-density-wave state of the organic metal α-(BEDT-TTF)2KHg(SCN)4

Details Superconductivity in the charge-density-wave state of the organic metal α-(BEDT-TTF)2KHg(SCN)4 Superconductivity in the charge-density-wave state of the organic metal α-(BEDT-TTF)2KHg(SCN)4

2005-09-29

arxiv.org/abs/cond-mat/0509769v1

Phys. Rev. B 72, 174513 (2005)

Physics

Condensed Matter

Superconductivity

8 pages, 9 figures, Phys. Rev. B, in press

Scientific paper

10.1103/PhysRevB.72.174513

The superconducting transition in the layered organic compound \alpha-(BEDT-TTF)_2KHg(SCN)_4 has been studied in the two hydrostatic pressure regimes where a charge-density wave is either present or completely suppressed. Within the charge-density-wave state the experimental results reveal a network of weakly coupled superconducting regions. This is especially seen in a strong enhancement of the measured critical field and the corresponding positive curvature of its temperature dependence. Further, it is shown that on lowering the pressure into the density-wave state traces of a superconducting phase already start to appear at a much higher temperature.

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