Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 56: Focus Session: (Anti)ferroic states – Magnetic and magnetoelectric III (joint session FM/MA)
MA 56.2: Talk
Friday, March 13, 2026, 10:00–10:15, BEY/0E40
Exploring Magnetoelectric Effects in 1T-FeCl2/bilayer-GaSe Multiferroic Heterostructures — •Fahmida Fakhera1, Oliver J. Conquest1, Carla Verdi1,2, and Catherine Stampfl1 — 1School of Physics, The University of Sydney, NSW 2006, Australia — 2School of Mathematics and Physics, The University of Queensland, QLD 4072, Australia.
Multiferroic materials exhibit multiple ferroic orders simultaneously, including ferromagnetism and ferroelectricity [1]. A recent study [2] on sliding ferroelectricity in bilayer GaSe adds a novel dimension, making it useful as a ferroelectric (FE) sublayer in multiferroic heterostructures. We employ first-principles density functional theory (DFT) to investigate the interlayer and intralayer sliding mechanisms of FE GaSe. Moreover, this study investigates the structural and electronic properties, energy band alignments, magnetic anisotropy, binding energies, electric dipole moments, and interfacial charge transfer of different stackings of 1T-FeCl2/bilayer GaSe. For all stackings, the magnetic anisotropy energies indicate an in-plane easy axis of magnetization in both upward and downward polarization directions. The contact interfaces form Ohmic contacts, enabling sufficient charge transfer between the layers. As the first study on sliding-induced FE and ferromagnetic interfaces, this work offers new insights into the design and understanding of multiferroic materials for the future.
[1] X. Feng, J. Liu, X. Ma, and M. Zhao, Physical Chemistry Chemical Physics 22, 7489 (2020). [2] F. Fakhera, O.J. Conquest, C. Verdi, and C. Stampfl, Physical Review Materials 9, 054402 (2025).
Keywords: Multiferroic; Density functional theory; Sliding ferroelectricity; ferromagnetism; Magnetic anisotropy