Superconducting properties of CuS2−xSex under high pressure

Cu dichalcogenide compounds CuS2-xSex with pyrite structure were synthesized at a pressure of 5 GPa with a cubic anvil press. All samples showed metallic behavior and exhibited superconductivity between 1.6 and 2.5 K. Magnetic susceptibility was measured with a SQUID magnetometer under various press...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2000-11, Vol.341-348, p.739-740
Main Authors: Takano, Yoshihiko, Uchiyama, Naoaki, Ogawa, Shinji, Môri, Nobuo, Kimishima, Yoshihide, Arisawa, Shunichi, Ishii, Akira, Hatano, Takeshi, Togano, Kazumasa
Format: Article
Language:English
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Summary:Cu dichalcogenide compounds CuS2-xSex with pyrite structure were synthesized at a pressure of 5 GPa with a cubic anvil press. All samples showed metallic behavior and exhibited superconductivity between 1.6 and 2.5 K. Magnetic susceptibility was measured with a SQUID magnetometer under various pressures. With increasing pressure, the Tc of CuSe2 decreased, and the decreasing rate was estimated to be about 0.2 K/GPa. Magnetic susceptibility of CuS2 began to decrease at 150 K and exhibited two peaks at around 40 and 50 K. 4 refs.
ISSN:0921-4534
DOI:10.1016/S0921-4534(00)00669-9