Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-04-22
Europhys. Lett., 41, pp. 431-436 (1998)
Physics
Condensed Matter
Strongly Correlated Electrons
8 pages, 3 figures, Latex with EPL style files all included
Scientific paper
10.1209/epl/i1998-00169-0
A magnetic model is proposed for describing the incommensurate I phase of spin-Peierls systems. Based on the harmonicity of the lattice distortion, its main ingredient is that the distortion of the lattice adjusts to the average magnetization such that the system is always gapful. The presence of dynamical incommensurabilities in the fluctuation spectra is also predicted. Recent experimental results for CuGeO_3 obtained by NMR, ESR and light scattering absorption are well understood within this model.
Boucher Jean-Paul
Schoenfeld Friedhelm
Uhrig Götz S.
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