https://doi.org/10.1007/s100510050003
The correlation length of the Heisenberg antiferromagnet with arbitrary spin S
Department of Physics, University of Colorado at Boulder,
Campus Box 390,
Boulder, CO 80309-0390, USA
Corresponding author: a hasenfra@itp.unibe.ch
Received:
9
February
1999
Published online: 15 January 2000
Experiments and numerical data on the correlation length 
for large S disagree
strongly with the theoretical prediction based on the effective field
theory prescription of the magnon physics.
The reason is that for large S,
at any accessible , the cut-off effects from the non-magnon scales
become large and can not be treated by an effective field theory.
We study these effects in a spin-wave expansion.
The corrected prediction on connects the renormalized
classical and the
classical scaling regions smoothly and comes close to the data.
PACS: 75.10.Jm – Quantized spin models / 75.50.Ee – Antiferromagnetics / 75.30.Ds – Spin waves
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
