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Zeitschrift für Physik B Condensed Matter
ISSN: 0722-3277 (printed version)
ISSN: 1431-584X (electronic version)
Abstract Volume 103 Issue 2 (1997) pp 209-215
Solitons and (spin-)Peierls transition in disordered quasi-one-dimensional systems
M. Mostovoy (*), D. Khomskii (**)
University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
Abstract. We study the (spin-)Peierls transition in quasi-one-dimensional disordered systems, treating the lattice classically. The role of kinks, induced thermally and by disorder, is emphasized. For weak interchain interaction the kinks destroy the coherence between different chains at a temperature significantly lower than the mean-field Peierls transition temperature. We formulate the effective Ising model, which describes such a transition, investigate the doping dependence of the (spin-)Peierls transition temperature and discuss several implications of the picture developed. The results are compared with the properties of the spin-Peierls system CuGeO3.
PACS: 64.70Kb; 75.10Jm
(*) Also at: G. I. Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
(**) Also at: P. N. Lebedev Physical Institute, Leninski prosp. 53, Moscow, Russia
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