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

S.-L. DRECHSLER; J. MALEK; M. LAVRENTIEV

doi:doi:10.1051/jp4:1993255

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		https://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. MALEK^{2, 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.