Dynamical Magnetic Susceptibilities in Cu Benzoate
Fabian H.L. Essler, Alexei M. Tsvelik
TL;DR
This paper analyzes the dynamical magnetic susceptibilities in Cu Benzoate, explaining experimental findings of a field-induced gap and magnetic order through theoretical calculations relevant for neutron scattering.
Contribution
It applies the Oshikawa and Affleck theory to compute susceptibilities near the antiferromagnetic wave vector using the formfactor method.
Findings
Calculated dynamical susceptibilities match experimental neutron scattering data.
Identified the nature of the field-induced gap and magnetic order in Cu Benzoate.
Provided theoretical support for observed magnetic phenomena in quasi-1D antiferromagnets.
Abstract
Recent experiments on the quasi 1-D antiferromagnet Cu Benzoate revealed a magentic field induced gap coexisting with (ferro)magnetic order. A theory explaining these findings has been proposed by Oshikawa and Affleck. In the present work we discuss consequences of this theory for inelastic neutron scattering experiments by calculating the dynamical magnetic susceptibilities close to the antiferromagnetic wave vector by the formfactor method.
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