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

K. Fabricius·U. Löw
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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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K. Fabricius, U. Löw. 1997-09-18. Dynamical properties of the compounds CuGeO_3 and α'--NaV_2O_5 at temperatures $T\neq 0$. https://doi.org/10.1103/physrevb.57.13371

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