Pressure induced Superconductor-Insulator transition in the spinel compound CuRh2S4

Details Pressure induced Superconductor-Insulator transition in the spinel compound CuRh2S4 Pressure induced Superconductor-Insulator transition in the spinel compound CuRh2S4

2002-11-12

arxiv.org/abs/cond-mat/0211232v2

Phys. Rev. Lett. 91, 077001 (2003)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.91.077001

We performed resistivity measurements in CuRh$_{2}$S$_{4}$ under quasi-hydrostatic pressure of up to 8.0 GPa, and found a pressure induced superconductor-insulator (SI) transition. Initially, with increasing pressure, the superconducting transition temperature $T_c$ increases from 4.7 K at ambient pressure to 6.4 K at 4.0 GPa, but decreases at higher pressures. With further compression, superconductivity in CuRh$_{2}$S$_{4}$ disappears abruptly at a critical pressure $P_{\rm SI}$ between 5.0 and 5.6 GPa, when it becomes an insulator.

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