We report quantitative neutron scattering measurements of the evolution with doping of the N\'eel temperature, the antiferromagnetic correlations, and the ordered moment of as-grown, nonsuperconducting Nd_{2-x}Ce_xCuO_{4\pm\delta} (0≤x≤0.18). The instantaneous correlation length can be effectively described by our quantum Monte Carlo calculations for the randomly site-diluted nearest-neighbor spin-1/2 square-lattice Heisenberg antiferromagnet. However, quantum fluctuations have a stronger effect on the ordered moment, which decreases more rapidly than for the quenched-disorder model.
@article{arxiv.cond-mat/0307093,
title = {Spin Correlations and Magnetic Order in Nonsuperconducting Nd_{2-x}Ce_xCuO_{4\pm\delta}},
author = {P. K. Mang and O. P. Vajk and A. Arvanitaki and J. W. Lynn and M. Greven},
journal= {arXiv preprint arXiv:cond-mat/0307093},
year = {2009}
}
Comments
4 pages, 3 figures, text updated to match published version