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Presence of energy flux in quantum spin chains: An experimental signature

Z. Racz

cond-mat.stat-mecharXiv:cond-mat/0005454

Abstract

Using the XXZ model for the description of one-dimensional magnetic materials we show that an energy flux, jE, produces a shift, dk (jE)0.5, in the characteristic wavenumber of the spin-spin correlations. We estimate dk for a realistic experimental setup and find that it is measurable in inelastic neutron scattering experiments.

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