J. Phys. IV France
Volume 114, April 2004
Page(s) 273 - 276

J. Phys. IV France
114 (2004) 273
DOI: 10.1051/jp4:2004114057

Superconductivity induced by extremely high pressure in layered organics, $\beta'$-(BEDT-TTF) 2ICl 2

H. Taniguchi1, 1, M. Miyashita1, K. Uchiyama1, K. Satoh1, N. Môri1, H. Okamoto2, K. Miyagawa2, K. Kanoda2, M. Hedo3 and Y. Uwatoko3

1  Department of Physics, Faculty of Science, Saitama University, Shimo-Ohkubo 255, Sakura-ku, Saitama 338-8570, Japan
2  Faculty of Medicine, Kanazawa University, Kodatsuno 5-11-89, Kanazawa 920-0942, Japan
3  Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

An organic Mott insulator, $\beta \prime
$ -(BEDT-TTF) 2ICl 2, is metallized by application of extremely high pressure up to 9.0GPa. When the metallic state is stabilized, superconductivity with the highest transition-temperature ( Tc) among organic systems appears. The maximum Tc that we observed was 14.2K(onset) at 8.2GPa. A magnetic-field effect on this superconductivity and normal-state properties are discussed in terms of comparison with other organic superconductors. Key words. Organic superconductor, high pressure.

© EDP Sciences 2004