Metal-nonmetal transition and superconductivity localization in the two-dimensional conductor kappa-(BEDT-TTF)(2)CU[N(CN)(2)]Cl under pressure

被引：108
作者：
Ito, H [1 ]
Ishiguro, T [1 ]
Kubota, M [1 ]
Saito, G [1 ]
机构：
[1] KYOTO UNIV, DEPT CHEM, KYOTO 60601, JAPAN
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 09期
关键词：
kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl; metal-nonmetal transition; superconductivity localization; pressure phase diagram; isotope substitution effect;
D O I：
10.1143/JPSJ.65.2987
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The pressure phase diagram of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl is determined by measuring the intralayer and interlayer resistivities. With increase of pressure, nonmetallic behavior of resistivity is suppressed and a metallic phase is stabilized, yielding the phase reentrance near critical pressure region. Concurrently, an incomplete superconductivity phase appearing at ambient pressure becomes to show complete superconductivity giving zero resistance when the sheet resistance becomes comparable to h/4e(2) by the application of pressure, indicating that the superconductivity is localized in the lower pressure region. The effect of deuteration of BEDT-TTF molecule on the pressure phase diagram is also discussed.
引用
收藏
页码：2987 / 2993
页数：7
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