Identifying Band Structure Changes of FePS3 across the Antiferromagnetic Phase Transition
Source abstract
Abstract
Magnetic 2D materials enable interesting tuning options of magnetism. As an example, the van der Waals material FePS 3, a zig-zag-type intralayer antiferromagnet, exhibits very strong magnetoelastic coupling due to the different bond lengths along different ferromagnetic and antiferromagnetic coupling directions enabling elastic tuning of magnetic properties. The likely cause of the length change is the intricate competition between direct exchange of the Fe atoms and superexchange via the S and P atoms. To elucidate this interplay, we study the band structure of exfoliated FePS 3 by μm scale ARPES (angular resolved photoelectron spectroscopy), both, above and below the Néel temperature T N . We found three characteristic changes across T N . They involve S 3 p -type bands, Fe 3 d -type bands and P 3 p -type bands, respectively, as attributed by comparison with density functional theory calculations (DFT + U). This highlights the involvement of all the atoms in the magnetic phase transition providing independent evidence for the intricate exchange paths.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: 2D Materials and Applications · Iron-based superconductors research · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
II. Institute of Physics B and JARA-FIT, RWTH-Aachen University, Aachen 52074, Germany
Forschungszentrum Jülich, Peter Grünberg Institute (PGI-6), Jülich 52428, Germany
Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute and Helen Diller Quantum Center, Technion - Israel Institute of Technology, Haifa 3200003, Israel
Forschungszentrum Jülich, Peter Grünberg Institute (PGI-1), Jülich 52428, Germany
Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
second Institute of Physics and JARA-FIT, RWTH-Aachen University, Aachen 52074, Germany
Faculty of Physics, University of Duisburg-Essen, Duisburg 47057, Germany
Funding
Israel Science Foundation · Deutsche Forschungsgemeinschaft · Bundesministerium f?r Forschung und Technologie · H2020 Marie Sklodowska-Curie Actions · Cluster of Excellence - Matter and Light for Quantum Computing · Deutsch - Israelisches Programm
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