131440 20241125101123.0 doi 10.1038/s41467-023-42436-7 sideral 136897 ART-2023-136897 eng Brede, Jens Detecting the spin-polarization of edge states in graphene nanoribbons 2023 Access copy available to the general public Unrestricted Low dimensional carbon-based materials can show intrinsic magnetism associated to p-electrons in open-shell π-conjugated systems. Chemical design provides atomically precise control of the π-electron cloud, which makes them promising for nanoscale magnetic devices. However, direct verification of their spatially resolved spin-moment remains elusive. Here, we report the spin-polarization of chiral graphene nanoribbons (one-dimensional strips of graphene with alternating zig-zag and arm-chair boundaries), obtained by means of spin-polarized scanning tunnelling microscopy. We extract the energy-dependent spin-moment distribution of spatially extended edge states with π-orbital character, thus beyond localized magnetic moments at radical or defective carbon sites. Guided by mean-field Hubbard calculations, we demonstrate that electron correlations are responsible for the spin-splitting of the electronic structure. Our versatile platform utilizes a ferromagnetic substrate that stabilizes the organic magnetic moments against thermal and quantum fluctuations, while being fully compatible with on-surface synthesis of the rapidly growing class of nanographenes. info:eu-repo/grantAgreement/ES/AEI/CEX2020-001058-M info:eu-repo/grantAgreement/ES/AEI/PID2019-107338RB-C61 info:eu-repo/grantAgreement/ES/AEI/PID2019-107338RB-C62 info:eu-repo/grantAgreement/ES/AEI/PID2019-107338RB-C63 info:eu-repo/grantAgreement/ES/AEI/PID2019-107338RB-C64 info:eu-repo/grantAgreement/ES/DGA/E12-20R info:eu-repo/grantAgreement/ES/DGA/E13-20R info:eu-repo/grantAgreement/EC/H2020/863098/EU/SPin Research IN Graphene/SPRING This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 863098-SPRING info:eu-repo/grantAgreement/ES/MICINN/PCI2019-111933-2 info:eu-repo/grantAgreement/ES/MICINN/PID2020-115406GB-I00 info:eu-repo/grantAgreement/EUR/MICINN/TED2021-132388B-C43 info:eu-repo/grantAgreement/ES/MINECO/RED2018-102833-T info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 14.7 2023 MULTIDISCIPLINARY SCIENCES 8 / 134 = 0.06 2023 Q1 T1 4.887 2023 Biochemistry, Genetics and Molecular Biology (miscellaneous) 2023 Q1 Physics and Astronomy (miscellaneous) 2023 Q1 Chemistry (miscellaneous) 2023 Q1 24.9 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Merino-Díez, Nestor Berdonces-Layunta, Alejandro Sanz, Sofía Domínguez-Celorrio, Amelia (orcid)0000-0001-8253-8741 Lobo-Checa, Jorge (orcid)0000-0003-2698-2543 Vilas-Varela, Manuel Peña, Diego Frederiksen, Thomas Pascual, José I. Oteyza, Dimas G. de Serrate, David (orcid)0000-0002-3260-9641 14, 6677 [8 pp.] (2023) Nature communications 2041-1723 2897235 http://zaguan.unizar.es/record/131440/files/texto_completo.pdf Versión publicada 2695558 http://zaguan.unizar.es/record/131440/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131440 articulos driver 2024-11-22-11:56:58 ARTICLE