| Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
|---|---|---|
| Page(s) | 419 - 424 | |
| DOI | https://doi.org/10.1051/jp4:2004114100 | |
J. Phys. IV France 114 (2004) 419
DOI: 10.1051/jp4:2004114100
Recent progress in development of single-component molecular metals
A. Kobayashi1, 1, E. Fujiwara1, W. Suzuki1, M. Sasa1, Y. Fujishiro2, E. Nishibori2, M. Takata2, M. Sakata2, Y. Okano3, H. Fujiwara3 and H. Kobayashi31 Research Centre for Spectrochemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
2 Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
3 Institute for Molecular Science and CREST, JST, Myodaiji, Okazaki 444-8585, Japan
Abstract
The novel nickel complex with the extended-TTF dithiolate
ligand [ Ni(tmdt)
2]
(tmdt=trimethylene dithiotetrathiafulvalenedithiolate) is the first
three-dimensional single-component molecular metal with metallic state down
to very low temperature (0.6 K). Recently, the direct evidence for presence
of electron and hole Fermi surfaces in [ Ni(tmdt)
2] was obtained by
detecting the de Haars-van Alphen (dHvA) effect. We have synthesized
analogous single-component molecular conductors with various ligands and
central metal atoms and examined their structures and physical properties.
The visible and ir spectra of single-component molecular conductors showed
that these molecules have unprecedentedly small HOMO-LUMO gaps.
Key words. Single-component molecular metal - dithiolene complex -
extended-TTF ligand.
© EDP Sciences 2004