Berlin 2012 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 45: Correlated Electrons: Poster Session

TT 45.87: Poster

Donnerstag, 29. März 2012, 15:00–19:00, Poster B

Skyrmions in two and three dimensional Dzyaloshinskii-Moriya magnets — •Stefan Buhrandt and Lars Fritz — Universität zu Köln, Institut für theoretische Physik, Zülpicher Strasse 77, 50937 Köln

Using classical Monte Carlo we study the phase diagram of ferromagnetic O(3) spin models with Dzyaloshinskii-Moriya interaction and spin anisotropies in applied magnetic fields. We determine the phase diagram for the two dimensional problem by simulated annealing upon investigation of the spin structure factor. We also study the evolution of the phase diagram upon becoming increasingly three dimensional. We especially focus on the evolution of the skyrmion crystal phase upon increasing the dimensionality.