Dresden 2014 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 45: Spin Structures at Surfaces and in thin films I (Skyrmions)
MA 45.11: Vortrag
Donnerstag, 3. April 2014, 17:45–18:00, BEY 118
Skyrmion magnetic structure of an ordered FePt monolayer deposited on Pt(111) — •Svitlana Polesya, Sergiy Mankovsky, Sven Bornemann, Jan Minar, and Hubert Ebert — Dept. Chemie/Physikalische Chemie, Universität München, Butenandtstr. 5-13, D-81377 München, Deutschland
The effect of the Dzyaloshinsky-Moriya interaction on the magnetic structure of an ordered FePt monolayer deposited on Pt (111) surface has been investigated1. All exchange interactions are obtained by means of first-principles calculations, using the spin-polarized relativistic Korringa-Kohn-Rostoker multiple scattering formalism. The interplay of relativistic exchange coupling interactions leads to a helimagnetic (HM) structure at normal conditions for T = 0 K. An applied magnetic field, however, creates a so-called Skyrmion structure, which is formed into a Skyrmion lattice at a certain value of the magnetic field. A T-B phase diagram for FePt/Pt(111) has been obtained performing Monte Carlo simulations based on the extended Heisenberg model.
1 S. Polesya, S. Mankovsky, S. Bornemann, J. Minár, H. Ebert, arXiv:1310.5681