Superconductivity at 14.2 K in layered organics under extreme pressure

被引：163

作者：

Taniguchi, H

Miyashita, M

Uchiyama, K

Satoh, K

Môri, N

Okamoto, H

Miyagawa, K

Kanoda, K

Hedo, M

Uwatoko, Y

机构：

[1] Saitama Univ, Fac Sci, Dept Phys, Saitama 3388570, Japan

[2] Kanazawa Univ, Fac Med, Kanazawa, Ishikawa 9200942, Japan

[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[4] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 03期

关键词：

beta '-(BEDT-TTF)2ICl(2); organic superconductor; superconducting transition temperature; high pressure; cubic anvil press; phase diagram;

D O I：

10.1143/JPSJ.72.468

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that an organic Mott insulator, beta'-(BEDT-TTF)(2)ICl2, is metallized by application of extremely high pressure by means of the cubic anvil press. When the metallic state is stabilized, superconductivity with the highest transition-temperature (T-3) among the organic systems appears. The lower limit of the pressure at which the superconducting transition manifests itself is approximately 7.0 GPa and T-c reaches a maximum value, 14.2 K (onset), at 8.2 GPa. The pressure-temperature phase diagram is constructed and discussed in terms of the comparison with those of other organic systems,

引用

页码：468 / 471

页数：4

共 36 条

[1] Electrical properties of an organic conductor, β′-(BEDT-TTF)2ICI2 up to 10 GPa [J].