| Issue |
J. Phys. IV France
Volume 114, April 2004
|
|
|---|---|---|
| Page(s) | 269 - 272 | |
| DOI | https://doi.org/10.1051/jp4:2004114056 | |
J. Phys. IV France 114 (2004) 269
DOI: 10.1051/jp4:2004114056
Dynamical charge disproportionation in metallic state in
-(BEDT-TTF)
2RbZn(SCN)
4
T. Takahashi1, 1, R. Chiba1, K. Hiraki1, H.M. Yamamoto2 and T. Nakamura3
1 Department of Physics, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
2 The Institute of Physical and Chemical Research, 2-1 Hirosawa, 351-0198 Wakou, Japan
3 Institute for Molecular Science, Myodaiji, 444-8585 Okazaki, Japan
Abstract
Results of
13C-NMR experiments on charge ordering in
non-dimerized BEDT-TTF salts are discussed. It has been experimentally
confirmed in
-(ET)
2RbZn(SCN)
4 that charge
disproportionation already develops well above the metal-insulator
transition temperature while no long-range charge order is stabilized.
Dynamics of the charge fluctuations has been determined in this salt and
compared with the situations in
-(ET)
2I
3. This result
seems to require a serious reconsideration of the transport properties in
the metallic state.
Key words. 13C-NMR, Charge disproportination.
© EDP Sciences 2004