Specific heat of two-dimensional diluted magnets

Selke, W.; Shchur, L. N., Vasilyev, O.A.
Institut für Theoretische Physik, Technische Hochschule Aachen,
D-52056 Aachen, Germany; Landau Institute, Chernogolovka, Russia


Using Monte Carlo techniques, the two-dimensional site-diluted Ising model is studied. In particular, properties of the specific heat, its critical behaviour and the emergence of a non-singular maximum above the transition temperature at moderate concentration of defects, are discussed.