| Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
|---|---|---|
| Page(s) | 399 - 340 | |
| DOI | https://doi.org/10.1051/jp4:2004114096 | |
J. Phys. IV France 114 (2004) 399
DOI: 10.1051/jp4:2004114096
Charge disproportionation in the metallic state
of
-(BEDT-TTF)
2I
3
S. Moroto1, 1, K.-I. Hiraki1, Y. Takano1, Y. Kubo1, T. Takahashi1, H.M. Yamamoto2 and T. Nakamura3
1 Department of Physics, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
2 RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japan
3 Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
Abstract
13C-NMR measurements have been carried out on the
quasi two-dimensional organic conductor,
-(BEDT-TTF)
2I
3.
We measured the angular dependence of
13C-NMR spectrum at several
temperatures above metal-insulator transition temperature, 135 K
(=
. We found that charge (spin) disproportionation already exists
in the metallic state and gradually develops as temperature approaches to
.
Key words.
13C-NMR, Charge disproportination.
© EDP Sciences 2004