Berlin 2024 – scientific programme
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MA: Fachverband Magnetismus
MA 47: Poster III
MA 47.10: Poster
Thursday, March 21, 2024, 15:00–18:00, Poster D
Growth and surface characterization of epitaxial CuFeS2 thin films on Si(001) — •Richard Justin Schenk, Anders Christian Mathisen, Stefanie Suzanne Brinkman, Xin Liang Tan, Matthias Hartl, Christoph Brüne, and Hendrik Bentmann — Center for Quantum Spintronics, Department of Physics, NTNU, Trondheim, Norway
Chalopyrite, CuFeS2, has recently gained attention as a semiconducting, collinear antiferromagnet with a high Néel temperature (TN = 823 K). As a representative of the magnetic space group (I42d) it has been predicted to host non-relativistic spin-polarized electronic bands, which have generated great interest in recent years in the context of altermagnetism. These properties make chalcopyrite a suitable candidate for future spintronics applications. We present CuFeS2 thin films on a lattice-matched Si(001) substrate using molecular beam epitaxy. We will report on surface preparation and characterization of the films based on low-energy electron diffraction (LEED) and X-ray photoelectron spectroscopy (XPS). Furthermore, the electronic structure of these films was investigated by laboratory-based photoelectron momentum microscopy and soft X-ray angle-resolved photoemission spectroscopy (ARPES).
Keywords: ARPES; CuFeS2; MBE; Antiferromagnets; Thin Films