Dresden 2026 – scientific programme

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O: Fachverband Oberflächenphysik

O 48: Metal & Semiconductor substrates: Structure, epitaxy and growth

O 48.5: Talk

Tuesday, March 10, 2026, 15:30–15:45, HSZ/0204

Evolution of surface superstructures on altermagnetic MnTe thin films — •Marco Dittmar, Franziska Beisler, Hannes Haberkamm, Lena Hirnet, Maximilian Ünzelmann, and Friedrich Reinert — Exp. Physik VII and Würzburg-Dresden Cluster of Excellence ctd.qmat, Universität Würzburg, Germany

MnTe has recently attracted significant attention as a workhorse altermagnet, where real space spin arrangements give rise to symmetry-driven, momentum-dependent spin splitting without net magnetization. In terms of basic research as well as for enabling high-quality interfaces in potential devices, the investigation of the surface atomic structure of MnTe becomes very important. In this talk, we present an electron diffraction surface analysis of epitaxially grown MnTe thin films, highlighting the factors that govern their surface atomic structure. In particular, we discuss how variations in Te flux and surface evaporation conditions guide the formation and stability of different surface reconstructions, we have found experimentally.

Keywords: MnTe; Superstructure; Epitaxy; Electron diffraction; Altermagnetism