Numéro
J. Phys. I France
Volume 6, Numéro 12, December 1996
Page(s) 1727 - 1744
DOI https://doi.org/10.1051/jp1:1996185
DOI: 10.1051/jp1:1996185
J. Phys. I France 6 (1996) 1727-1744

Theory of Lattice and Electronic Fluctuations in Weakly Localized Spin-Peierls Systems

C. Bourbonnais and B. Dumoulin

Centre de Recherche en Physique du Solide et Département de Physique, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1



(Received 18 July 1996, received in final form 26 August 1996, accepted 29 August 1996)

Abstract
A theoretical approach to the influence of one-dimensional lattice fluctuations on electronic properties in weakly localized spin-Peierls systems is proposed using the renormalization group and the functional integral techniques. The interplay between the renormalization group flow of correlated electrons and one-dimensional lattice fluctuations is taken into account by the one-dimensional functional integral method in the adiabatic limit. Calculations of spin-Peierls precursor effects on response functions are carried out explicitly and the prediction for the temperature dependent magnetic susceptibility and nuclear relaxation is compared with available experimental data for (TMTTF) 2PF 6.



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