The influence of a strong disorder on the critical dynamics of 3D Heisenberg ferromagnet was investigated by high-resolution quasielastic neutron scattering. A new disorder-induced dynamical critical behavior was found, characterized by its critical exponent z=2.3. The dynamical scaling function appeared mainly unaffected by disorder but its description led to a new parameterization of the Renormalization Group theory, as in the case of pure Nickel.
@article{arxiv.cond-mat/0008267,
title = {Dynamic critical behavior of disordered 3D Heisenberg ferromagnets},
author = {M. Alba and S. Pouget},
journal= {arXiv preprint arXiv:cond-mat/0008267},
year = {2009}
}
Comments
7 pages, 2 Postscript figures, ICM2000 conference to appear in J. of M.M.M