Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
---|---|---|
Page(s) | 387 - 389 | |
DOI | https://doi.org/10.1051/jp4:2004114092 |
J. Phys. IV France 114 (2004) 387
DOI: 10.1051/jp4:2004114092
Characterization of transport and magnetic properties of a Mott
insulator,
-(BEDT-TTF)
2IBrCl
K. Uchiyama1, M. Miyashita1, H. Taniguchi1, 1, K. Satoh1, N. Môri1, 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 Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
3 Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa, Chiba 277-8581, Japan
Abstract
Physical properties of an organic conductor,
-(BEDT-TTF)
2IBrCl, were characterized under ambient and
extremely high pressures. Semiconducting behavior with activation energy,
Ea=0.11eV, and antiferromagnetic transition with
TN=19.5K were
uncovered in the present work. In addition, we have found that this salt
showed a sign of superconductivity at 8.0GPa in common with the case of the
-(BEDT-TTF)
2ICl
2, which is the highest-
Tc
superconductor among organics.
Key words. Organic superconductor, magnetic susceptibility,
antiferromagntic transition, high pressure.
© EDP Sciences 2004