Picco, MarcoRitort Farran, Fèlix2010-01-262010-01-2620050163-1829https://hdl.handle.net/2445/10921We present some numerical results for the Heisenberg spin-glass model with Gaussian interactions, in a three dimensional cubic lattice. We measure the AC susceptibility as a function of temperature and determine an apparent finite temperature transition which is compatible with the chiral-glass temperature transition for this model. The relaxation time diverges like a power law $\tau\sim (T-T_c)^{-z\nu}$ with $T_c=0.19(4)$ and $z\nu=5.0(5)$. Although our data indicates that the spin-glass transition occurs at the same temperature as the chiral glass transition, we cannot exclude the possibility of a chiral-spin coupling scenario for the lowest frequencies investigated.4 p.application/pdfeng(c) The American Physical Society, 2005Vidres de spinPropietats magnètiquesMagnetic propertiesSpin glassesinfo:eu-repo/semantics/article527644info:eu-repo/semantics/openAccess