Berlin 2024 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 20: Poster II

DS 20.20: Poster

Donnerstag, 21. März 2024, 18:00–20:30, Poster D

Growth study of the altermagnet MnTe — •Marco Dittmar, Hannes Haberkamm, Philipp Kagerer, Maximilian Ünzelmann, and Friedrich Reinert — Exp. Physik VII and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, Germany

Next to ferromagnetism and antiferromagnetism, a new type of magnetic order, called altermagnetism, has recently been predicted and has since attracted great attention. It is characterized by antiferromagnetic spin alignment combined with rotational lattice symmetry. Based on a profound symmetry analysis, various materials have been predicted to exhibit this type of magnetic order, one of which is MnTe in its hexagonal NiAs-type crystal structure [1].
Here, we present a growth study of MnTe on different substrates based on molecular beam epitaxy. Using X-ray diffraction, atomic force microscopy and photoemission spectroscopy, we will discuss e.g. the influence of the growth parameters on the observed films and the effect of substrate-induced lattice strain on the resulting crystal phase.
[1] L. Šmejkal et al., Phys. Rev. X 12, 031042 (2022)

Keywords: MBE; Altermagnetism; Thin film growth