Volume 59, Number 4, August 2002
|Page(s)||619 - 625|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 August 2002|
Static and dynamic order of cooperative multi-electron transfer
Institute of Physical and Theoretical Chemistry, Technical University
of Wrocław PL-50370 Wrocław, Poland
2 Groupe Matière Condensée et Matériaux, UMR 6626 CNRS, Université de Rennes 1 F-35042 Rennes, France
3 Kanagawa Academy of Science and Technology (KAST) Takatsu-ku, Kawasaki JP-213-0012, Japan
4 Department of Materials Science, Tokyo Institute of Technology Meguro-ku, Tokyo JP-152-8551, Japan
5 Laboratoire Leon Brillouin, CEA/Saclay - F-91191 Gif-sur-Yvette, France
6 Department of Applied Physics, University of Tokyo Bunkyo-ku, Tokyo JP-113-8656, Japan
7 Joint Research Center for Atom Technology Tsukuba JP-305-0046, Japan
8 Institute Laue Langevin - F-38042 Grenoble, France
Accepted: 31 May 2002
We report on high correlation and ordering of multi-electron transfer at neutral-ionic transformation in quasi–one-dimensional prototype crystal of tetrathiafulvalene-chloranil (TTF-CA). We present experimental evidences that the ordering of lattice-relaxed charge-transfer strings, which are nano-scale objects, occurs under static thermal equilibrium condition and non-equilibrium one achieved by femto-second laser irradiation. We suggest that the transformation is a profound example of self-organized, cooperative electron transfer with tendency for phase separation driven by energetics of inter-chain interaction and ferroelectric ordering.
PACS: 81.30.Dz – Phase diagrams of other materials / 61.50.Ks – Crystallographic aspects of phase transformations; pressure effects / 77.84.Jd – Polymers; organic compounds
© EDP Sciences, 2002
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