Pressure-induced superconductor-insulator transition in the spinel compound CuRh2S4 |
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Authors: | Ito M Hori J Kurisaki H Okada H Perez Kuroki A J Ogita N Udagawa M Fujii H Nakamura F Fujita T Suzuki T |
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Institution: | Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan. showa@hiroshima-u.ac.jp |
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Abstract: | We performed resistivity measurements in CuRh2S4 under quasihydrostatic pressure of up to 8.0 GPa, and found a pressure-induced superconductor-insulator 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 CuRh2S4 disappears abruptly at a critical pressure P(SI) between 5.0 and 5.6 GPa, when it becomes an insulator. |
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