Dynamics of the 1D Heisenberg model and optical absorption of spinons in cuprate antiferromagnetic chains

Details Dynamics of the 1D Heisenberg model and optical absorption of spinons in cuprate antiferromagnetic chains Dynamics of the 1D Heisenberg model and optical absorption of spinons in cuprate antiferromagnetic chains

1996-08-07

arxiv.org/abs/cond-mat/9608035v1

Phys. Rev. B 55, R3358 (1997)

Physics

Condensed Matter

Revtex, 4 pages

Scientific paper

10.1103/PhysRevB.55.R3358

We use numerical and analytical results to construct a simple ansatz for the
energy dynamical correlation function of the 1D antiferromagnetic Heisenberg
model. This is applied to compute the phonon assisted absorption spectra of
magnetic excitations (spinons) in quasi-one dimensional spin 1/2 insulators and
show to reproduce very well recent infrared measurements in Sr$_2$CuO$_3$.

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