1999/10/26 by Koji Hukushima, Hajime Yoshino, Hajime Takayama · 3 citations
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Crossover #Domain (mathematical analysis) #Ising model #Length scale #Material Dynamics and Properties #Monte Carlo method #Phase transition #Scaling #Spin (aerodynamics) #Spin glass #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.stat-mech
paper · pdf · doi:10.1143/ptps.138.568
6 pages, 4 postscript figures. Proceedings of the Conference ICCP5, Kanazawa, Japan, October 11-13, 1999
arxiv created 1999/10/26 · openalex publication_date 2000/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Aging phenomena of short-range Ising spin glass models have been investigated using Monte Carlo simulations. It is found that in the low-temperature spin-glass phase the mean domain size exhibits a crossover from a power-law growth associated with the critical fluctuation at the transition temperature to slower growth inherent in the low-temperature phase. The temperature dependence of the growth law of the domain size can be almost explained by this crossover. We also find that the spin-autocorrelation function in the quasi-equilibrium regime follows the expected scaling behavior from the droplet theory expressed in terms of the mean domain size and a characteristic length scale of droplet excitations.