Regensburg 2019 – wissenschaftliches Programm
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 7: Multiferroics
KFM 7.9: Vortrag
Montag, 1. April 2019, 18:10–18:30, H47
Magnetic monopoles in LuFeO3: modelling inelastic neutron scattering and magnetoelectric effect — Francesco Foggetti1,2, Sang-Wook Cheong3, and •Sergey Artyukhin1 — 1Italian Institute of Technology — 2University of Genova, Italy — 3Rutgers University, USA
Multiferroic hexagonal manganites are an interesting realization of frustrated triangular lattice, where magnetic order is coupled to ferroelectricity and trimerization. They support 120 degrees antiferromagnetism with spin canting due to Dzyaloshinskii-Moriya interaction leading to magnetoelectricity. Here we study the possible spin orders and their neutron scattering signatures, as well as their connection to magnetoelectric effect. The calculations are performed using spin wave approximation, within the microscopic model that involves spin and structural degrees of freedom.