Size dependence of the internal energy in Ising and vector spin glasses
Helmut G. Katzgraber, Ian A. Campbell
We study numerically the scaling correction to the internal energy per spin as a function of system size and temperature in a variety of Ising and vector spin glasses. From a standard scaling analysis we estimate the effective size correction exponent x at each temperature. For each system with a finite ordering temperature, as temperature is increased from zero, x initially decreases regularly until it goes through a minimum at a temperature close to the critical temperature, and then increases strongly. The behavior of the exponent x at and below the critical temperature is more complex than suggested by the model for the size correction that relates x to the domain-wall stiffness exponent.
arXiv:cond-mat/0309278•Physical review. B, Condensed matter•Nov 5, 2003•5 citations