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O: Fachverband Oberflächenphysik
O 22: Poster Session - 2D Materials Beyond Graphene: Growth, Structure and Substrate Interaction
O 22.7: Poster
Montag, 16. März 2020, 18:15–20:00, P1A
Growth and characterization of monolayer MnSe2 on Au(111) — •Sebastien Hadjadj, Evangelos Golias, Sangeeta Thakur, Ivar Kumberg, and Wolfgang Kuch — Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
During the last couple of years, there is a rising interest in novel two-dimensional magnetic materials. Most recently, several groups have shown that magnetic order in two-dimensional materials can be stable [1, 2]. The case of MnSe2 is interesting, since it has shown magnetic properties at room temperature, making it an ideal candidate for actual applications. However, magnetic order has been reported for MnSe2 grown on GaSe or SnSe2, and the role of the interface in the stabilization of magnetic order is not yet clear. It needs to be ascertained if the magnetic ordering of monolayer MnSe2 is an intrinsic effect of the material or an interface-induced phenomenon. Here we use molecular beam epitaxy to co-deposit Se and Mn on Au(111). Selenium is mounted in an effusion cell and is heated up to evaporate, while manganese is evaporated by electron bombardement. We characterize the films chemically by x-ray and Auger electron spectroscopy as well as structurally by low-energy electron diffraction.
[1] B. Huang et al. "Electrical control of 2D magnetism in bilayer CrI3", Nature Nanotechnology 13, 544 (2018).
[2] D. J. O’Hara et al. "Room Temperature Intrinsic Ferromagnetism in Epitaxial Manganese Selenide Films in the Monolayer Limit", Nano Letters 18, 3125 (2018).