Dynamical properties of the compounds CuGeO3 and α'--NaV2O5 at temperatures T≠ 0
K. Fabricius, U. Löw
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.
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