https://doi.org/10.1140/epjb/s10051-025-01071-5
Research - Condensed Matter
Theory of interlayer coupling in CrSBr altermagnet semiconductor
Institute of Physics, Federal University of Mato Grosso, 78060-900, Cuiabá, Brazil
Received:
12
August
2025
Accepted:
13
October
2025
Published online:
22
October
2025
Altermagnets provide promising platforms for novel magnetism, which could empower a new generation of spintronic devices. While various bulk altermagnets have been discovered, altermagnetism in infinite-layer van der Waals (vdW) semiconductors remains elusive. Motivated thereby, here we perform a theory study for the electronic structure reconstruction within the magnetically ordered phase of CrSBr vdW crystal. Based on the Green’s function formalism combined with density functional plus dynamical mean-field theory calculations, we unveil the role played by interlayer hybridization and local many-particle interactions on the electronic state of infinite-layer CrSBr, using its ferromagnetic monolayer spin–orbital state as the building block toward c-axis altermagnetism. This work is a step forward in describing the manifestation of the electronic state of antiferromagnetic CrSBr and its anisotropic evolution induced by the interplay between orbital- and spin-selective electronic structure and layer-by-layer magnetic ordering. Our study identifies CrSBr as a prototypical infinite-layer vdW material featuring altermagnetic order.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
