Physics – Condensed Matter
Scientific paper
1995-03-28
Physical Review Letters 75, 938 (1995)
Physics
Condensed Matter
5 pages, REVTeX file. PostScript file for the paper with embedded figures available via WWW at http://xxx.lanl.gov/ps/cond-mat
Scientific paper
10.1103/PhysRevLett.75.938
We present a series expansion study of spin-S square-lattice Heisenberg antiferromagnets. The numerical data are in excellent agreement with recent neutron scattering measurements. Our key result is that the correlation length for S>1/2 strongly deviates from the exact T->0 (renormalized classical, or RC) scaling prediction for all experimentally and numerically accessible temperatures. We note basic trends with S of the experimental and series expansion correlation length data and propose a scaling crossover scenario to explain them.
Birgeneau Robert J.
Elstner Norbert
Greven Martin
Singh Rajiv R. P.
Sokol Alexey A.
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