Numéro
J. Phys. IV France
Volume 03, Numéro C2, Juillet 1993
International Workshop on Electronic Crystals
ECRYS - 93
Page(s) C2-273 - C2-276
DOI http://dx.doi.org/10.1051/jp4:1993255
International Workshop on Electronic Crystals
ECRYS - 93

J. Phys. IV France 03 (1993) C2-273-C2-276

DOI: 10.1051/jp4:1993255

Nonlinear excitations and phonons in alternating chains with mixed CDW-BOW ground state

S.-L. DRECHSLER1, J. MALEK2, 3 and M. LAVRENTIEV4

1  Institut für Festkörper- und Werkstofforschung Dresden e.V., Helmholtzstr. 20, 01069 Dresden, Germany
2  Institut für Festkörper- und Werkstofforschung Dresden e. V., Helmholtzstr. 20, 01069 Dresden, Germany
3  On leave from Institute of Physics, Prague, Czech Republic
4  Institute of Inorganic Chemistry, Novosibirsk, Russia


Abstract
Two-component nonlinear excitations as various kinds of polarons and solitons as well as optical phonons have been examined self-consistently within a two-band SSH-Holsteintype model for alternating periodic and open chains of molecular A- and atomic B-sites. Analyzing experimental data of CuO3- and MX-chain compounds within the framework of this model, the importance of internal modes for a complete description of such Peierls systems is emphasized.



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