Noncollinear Edge Magnetism in Nanoribbons of Fe3GeTe2 and Fe3GaTe2Show others and affiliations
2025 (English)In: Nano Letters, ISSN 1530-6984, E-ISSN 1530-6992, Vol. 25, no 31, p. 11797-11802Article in journal (Refereed) Published
Abstract [en]
Fe3GeTe2 and Fe3GaTe2 are ferromagnetic conducting materials of van der Waals type with unique magnetic properties that are highly promising for the development of new spintronic, orbitronic, and magnonic devices. Even in the form of two-dimensional-like ultrathin films, they exhibit a relatively high Curie temperature, magnetic anisotropy perpendicular to the atomic planes, and multiple types of Hall effects. We explore nanoribbons made from single layers of these materials and show that they display noncollinear magnetic ordering at their edges. This magnetic inhomogeneity allows angular momentum currents to generate magnetic torques at the sample edges, regardless of their polarization direction, significantly enhancing the effectiveness of magnetization manipulation in these systems. We also demonstrate that it is possible to rapidly reverse the magnetization direction of these nanostructures by means of spin–orbit and spin-transfer torques with rather low current densities, making them quite propitious for nonvolatile magnetic memory units.
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2025. Vol. 25, no 31, p. 11797-11802
Keywords [en]
magnetism, field-free switching, 2D materials, spin dynamics, spin orbit torque, spintronics
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-567229DOI: 10.1021/acs.nanolett.5c01890ISI: 001534200000001PubMedID: 40699937Scopus ID: 2-s2.0-105013157348OAI: oai:DiVA.org:uu-567229DiVA, id: diva2:1999400
Funder
Swedish Research Council, 2022-067252025-09-192025-09-192025-09-19Bibliographically approved