{ "id": "2402.09610", "version": "v1", "published": "2024-02-14T22:56:19.000Z", "updated": "2024-02-14T22:56:19.000Z", "title": "Spin-orbit torque in single-molecule junctions from ab initio", "authors": [ "María Camarasa-Gómez", "Daniel Hernangómez-Pérez", "Ferdinand Evers" ], "comment": "7 pages + 5 figures; Supporting Information (16 pages + 3 figures)", "journal": "J. Phys. Chem. Lett. 15, 5747 (2024)", "doi": "10.1021/acs.jctc.3c01230", "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci" ], "abstract": "The use of electric fields applied across magnetic heterojunctions that lack spatial inversion symmetry has been previously proposed as a non-magnetic mean of controlling localized magnetic moments through spin-orbit torques (SOT). The implementation of this concept at the single-molecule level has remained a challenge, however. Here, we present first-principle calculations of SOT in a single-molecule junction under bias and beyond linear response. Employing a self-consistency scheme invoking density functional theory and non-equilibrium Green's function theory, we compute the current-induced SOT. Responding to this torque, a localized magnetic moment can tilt. Within the linear regime our quantitative estimates for the SOT in single-molecule junctions yield values similar to those known for magnetic interfaces. Our findings contribute to an improved microscopic understanding of SOT in single molecules.", "revisions": [ { "version": "v1", "updated": "2024-02-14T22:56:19.000Z" } ], "analyses": { "keywords": [ "spin-orbit torque", "ab initio", "invoking density functional theory", "scheme invoking density functional", "single-molecule junctions yield values similar" ], "tags": [ "journal article" ], "publication": { "publisher": "ACS" }, "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable" } } }