We present a theoretical expression for the spin-echo decay rate, 1/T_2G, in the quantum-critical regime of square lattice quantum antiferromagnets. Our results are in good agreement with recent experimental data by Imai et al. [Phys. Rev. Lett. v.71, 1254 (1993)] for La_2CuO_4.
Cite
@article{arxiv.cond-mat/9310052,
title = {Universal Behavior of the Spin-Echo Decay Rate in La_2CuO_4},
author = {A. V. Chubukov and S. Sachdev and A. Sokol},
journal= {arXiv preprint arXiv:cond-mat/9310052},
year = {2009}
}
Comments
13 pages, REVTeX v3.0, PostScript file for figures is attached