Pressure-induced superconductor-insulator transition in the spinel compound CuRh2S4.
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.
Ito
M
M
Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan. showa@hiroshima-u.ac.jp
Hori
J
J
Kurisaki
H
H
Okada
H
H
Perez Kuroki
A J
AJ
Ogita
N
N
Udagawa
M
M
Fujii
H
H
Nakamura
F
F
Fujita
T
T
Suzuki
T
T