Ising thin films with modulations and surface defects

W. Selke
Institut für Theoretische Physik, Technische Hochschule Aachen, D-52056 Aachen, Germany

M. Pleimling
Institut für Theoretische Physik, Universität Erlangen, D- 91058 Erlangen, Germany

I. Peschel, M. Kaulke, M.-C. Chung
Fachbereich Physik, Freie Universität Berlin, D-14195 Berlin, Germany

D. Catrein
Institut für Theoretische Physik, Technische Hochschule Aachen, D-52056 Aachen, Germany

Abstract:

Properties of magnetic films are studied in the framework of Ising models. In particular, we discuss critical phenomena of ferromagnmetic Ising films with straight lines of magnetic adatoms and straight steps on the surface as well as phase diagrams of the axial next-nearest neighbour Ising (ANNNI) model for thin films exhibiting various spatially modulated phases.


cond-mat/0105583