Dynamic critical behavior of disordered 3D Heisenberg ferromagnets

Details Dynamic critical behavior of disordered 3D Heisenberg ferromagnets Dynamic critical behavior of disordered 3D Heisenberg ferromagnets

2000-08-18

arxiv.org/abs/cond-mat/0008267v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

7 pages, 2 Postscript figures, ICM2000 conference to appear in J. of M.M.M

Scientific paper

10.1016/S0304-8853(00)00769-1

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.

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