A magnetic model for the incommensurate I phase of spin-Peierls systems

Abstract

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.

8 pages, 3 figures, Latex with EPL style files all included

References in corpus (1)

• Symmetry and dimension of the magnon dispersion of inorganic spin-Peierls systems

Cited by in corpus (12)

• Soliton Approach to Spin-Peierls Antiferromagnets: Large-Scale Numerical Results
• NMR imaging of the soliton lattice profile in the spin-Peierls compound CuGeO_3
• Investigation of soliton bound states in the Raman spectrum of pure and doped spin-Peierls chains
• Soliton Lattices in the Incommensurate Spin-Peierls Phase: Local Distortions and Magnetizations
• Thermodynamic properties of the periodic nonuniform spin-1/2 isotropic XY chains in a transverse field
• Excitation Spectra of Structurally Dimerized and Spin-Peierls Chains in a Magnetic Field
• Magnetic excitations and phonons in the spin-chain compound NaCu2O2
• Possible Localized Modes in the Uniform Quantum Heisenberg Chains of Sr2CuO3
• Excitations of the field-induced soliton lattice in CuGeO3
• Ordered phases in spin-Peierls systems
• Modulated Phases in Spin-Peierls Systems
• Commensurate and Incommensurate Phases of a Spin-Peierls System