Dynamical properties of the compounds CuGeO_3 and α'--NaV_2O_5 at temperatures $T\ne 0$

Abstract

The dynamical structure factor of the frustrated spin 1/2 Heisenberg model for a series of frustration parameters at finite temperatures is presented. A sharp upper boundary of the spinon continuum is found. A simple method to extract the nearest neighbour coupling J from the spectral width is suggested. Signatures of frustration are discussed and a comparison with neutron inelastic scattering data is given.

4 pages, REVTEX, 7 figures,minor corrections only; mainly misprints removed

References in corpus (4)

• Reexamination of the microscopic couplings of the quasi one-dimensional antiferromagnet CuGeO_3
• Dynamics of the spin-half Heisenberg chain at intermediate temperatures
• Symmetry and dimension of the magnon dispersion of inorganic spin-Peierls systems
• Dynamical properties of the spin-Peierls compound α'--NaV2O5

Cited by in corpus (3)

• Finite Temperature Dynamics of the Spin 1/2 Bond Alternating Heisenberg Antiferromagnetic Chain
• Dynamical central peak and spinon deconfinement in frustrated spin chains
• Ordered phases in spin-Peierls systems