Ultra-thin magnetic films and the structural glass transition: a modelling analogy

SERGIO CANNAS, PABLO GLEISER, FRANCISCO TAMARIT

Recent research developments in Physics

S.G. Pandalai

Año: 2004; p. 1 - 12

In this work we study a two dimensional Ising model for ultra-thin magnetic lms whichpresents competition between short range ferromagnetic interactions and long-range antiferromagnetic dipolar interactions. We present evidence that the dynamical and thermodynamical properties of the model allow for an alternative interpretation, in termsof glass forming liquids. In particular, the existence of a rst order phase transitionbetween a low temperature crystal{like ordered phase a high temperature liquid{likedisordered phase, which can be supercooled below the melting point, together with adrastic slowing down after a quench to low temperatures suggest that these materialscould present a phenomenology similar to that observed in glass forming liquids