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MON: Monday Contributed Sessions
MON 23: Poster Session: Fundamental Aspects and Model Systems
MON 23.53: Poster
Monday, September 8, 2025, 18:30–20:30, ZHG Foyer 1. OG
Epitaxial Growth of Van der Waals Magnets Cr1+δTe2 — •Pia Henning, Anna Tschesche, Laura Pflügl, Tobias Meyer, and Jasnamol Palakkal — Institute of Material Physics, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen
Tunable magnetic materials in 3D and as well as in lower dimensions, exhibiting ferromagnetism and perpendicular magnetic anisotropy (PMA) are highly desired for application in future spintronic devices. In the course of that, thin films of transition metal dichalcogenides Cr1+δTe2 gained an increased interest, due to their highly tunable magnetic anisotropy and ferromagnetism with TC ranging from 150 K to 350 K [1]. The stoichiometry, i.e. the intercalation of Cr species (δ) in between CrTe2 layers, is the reason for the highly variable magnetic properties [1]. This makes the need for a sensitive control of δ in combination with a high-quality thin film growth critical. A hybrid deposition was used for growing Cr1+δTe2 thin films with various δ, combining Pulsed Laser Deposition (PLD) and Molecular Beam Epitaxy (MBE). Structural, magnetic and transport properties of the samples were evaluated, whereby Room-temperature ferromagnetism, PMA, anisotropic magnetoresistance and anomalous Hall effect are observed, showing a high tunability of properties relative to δ. This work emphasizes the potential of this hybrid deposition technique for growing transition metal dichalcogenide thin films paving the way for possible device applications.
[1] A. Tschesche, P. Henning, et al., Preprint on Research Square, https://doi.org/10.21203/rs.3.rs-4861088/v1
Keywords: Van der Waals Materials; Transition Metal Dichalcogenides; Pulsed Laser Deposition; Molecular Beam Epitaxy; Ferromagnetism