Anomalous Spin Dynamics in Doped Quantum Antiferromagnets
Condensed Matter
2009-10-22 v1
Abstract
Finite-temperature spin dynamics in planar t-J model is studied using the method based on the Lanczos diagonalization of small systems. Dynamical spin structure factor at moderate dopings shows the coexistence of free-fermion-like and spin-fluctuation timescales. At T<J, the low-frequency and static susceptibility show pronounced T dependence, supporting a scenario, related to the marginal Fermi-liquid one, for the explanation of neutron-scattering and NMR-relaxation experiments in cuprates. Calculated NMR relaxation rates reasonably reproduce experimental ones.
Cite
@article{arxiv.cond-mat/9410085,
title = {Anomalous Spin Dynamics in Doped Quantum Antiferromagnets},
author = {J. Jaklic and P. Prelovsek},
journal= {arXiv preprint arXiv:cond-mat/9410085},
year = {2009}
}
Comments
10 pages + 4 figures, Postscript in uuencoded compressed tar file, IJS-TP-94/24