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MA: Fachverband Magnetismus
MA 1: Computational Magnetism I
MA 1.8: Vortrag
Montag, 16. März 2020, 11:30–11:45, HSZ 04
Dzyaloshinskii-Moriya interaction enhanced reorientation in Fe2W — •Balázs Nagyfalusi1, László Udvardi1,2, László Szunyogh1,2, and Levente Rózsa3 — 1Department of Theoretical Physics, Budapest University of Technology and Economics, Budapest, Hungary — 2MTA-BME Condensed Matter Research Group, Budapest University of Technology and Economics, Budapest, Hungary — 3Universität Konstanz, Konstanz, Germany
The magnetic ground state of an Fe bilayer on W(110) substrate is a normal-to-plane alignment which on higher temperatures turns into the (110) in-plane direction. We investigated this phenomenon with metadynamics Monte Carlo simulations[1] based on a classical Heisenberg model, and found that the neglection the antisymmetric part of the exchange tensor, i.e. the Dzyaloshinskii-Moriya interaction the reoriention no longer occurs. The simulation has been performed using exchange tensors and anisotropy parameters obtained from ab-initio calculations.
1. B. Nagyfalusi et al. https://arxiv.org/abs/1907.03616