dc.contributor.author | Schulz, Susanne | |
dc.contributor.author | Nechaev, Ilya A. | |
dc.contributor.author | Guettler, Monika | |
dc.contributor.author | Poelchen, Georg | |
dc.contributor.author | Generalov, Alexander | |
dc.contributor.author | Danzenbaecher, Steffen | |
dc.contributor.author | Chikina, Alla | |
dc.contributor.author | Seiro, Silvia | |
dc.contributor.author | Kliemt, Kristin | |
dc.contributor.author | Vyazovskaya, Alexandra Yu | |
dc.contributor.author | Kim, Timur K. | |
dc.contributor.author | Dudin, Pavel | |
dc.contributor.author | Chulkov, Evgueni V. | |
dc.contributor.author | Laubschat, Clemens | |
dc.contributor.author | Krasovskii, Eugene E. | |
dc.contributor.author | Geibel, Christoph | |
dc.contributor.author | Krellner, Cornelius | |
dc.contributor.author | Kummer, Kurt | |
dc.contributor.author | Vyalikh, Denis V. | |
dc.date.accessioned | 2020-02-20T10:47:35Z | |
dc.date.available | 2020-02-20T10:47:35Z | |
dc.date.issued | 2019-06-03 | |
dc.identifier.citation | NPJ Quantum Materials 4 : (2019) // Article ID 26 | es_ES |
dc.identifier.issn | 2397-4648 | |
dc.identifier.uri | http://hdl.handle.net/10810/41343 | |
dc.description.abstract | The development of materials that are non-magnetic in the bulk but exhibit two-dimensional (2D) magnetism at the surface is at the core of spintronics applications. Here, we present the valence-fluctuating material EuIr2Si2, where in contrast to its nonmagnetic bulk, the Si-terminated surface reveals controllable 2D ferromagnetism. Close to the surface the Eu ions prefer a magnetic divalent configuration and their large 4f moments order below 48 K. The emerging exchange interaction modifies the spin polarization of the 2D surface electrons originally induced by the strong Rashba effect. The temperature-dependent mixed valence of the bulk allows to tune the energy and momentum size of the projected band gaps to which the 2D electrons are confined. This gives an additional degree of freedom to handle spin-polarized electrons at the surface. Our findings disclose valence-fluctuating rare-earth based materials as a very promising basis for the development of systems with controllable 2D magnetic properties which is of interest both for fundamental science and applications. | es_ES |
dc.description.sponsorship | This work was supported by the German Research Foundation (DFG) through Grants No. KR3831/5-1, No. LA655/20-1 and Fermi-NEst. Support was provided by the Spanish Ministry of Science, Innovation and Universities (Project No. FIS2016-76617-P and No. FIS2016-75862-P). We acknowledge financial support from the Spanish Ministry of Economy (MAT-2017-88374-P). The authors also acknowledge support by Saint Petersburg State University (Grant No. 15.61.202.2015) and Tomsk State University Academic D. I. Mendeleev Fund Program (Research Grant No. 8.1.01.2018). We acknowledge Diamond Light Source for access to beamline I05 (proposals no. SI18844-1 and SI17761-1) that contributed to the results presented here. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Nature Publishing Group | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/MAT-2017-88374-P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | system | es_ES |
dc.subject | photoemission | es_ES |
dc.subject | transition | es_ES |
dc.subject | electron | es_ES |
dc.title | Emerging 2D-ferromagnetism and strong spin-orbit coupling at the surface of valence-fluctuating EuIr2Si2 | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0) | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.nature.com/articles/s41535-019-0166-z | es_ES |
dc.identifier.doi | 10.1038/s41535-019-0166-z | |
dc.departamentoes | Electricidad y electrónica | es_ES |
dc.departamentoeu | Elektrizitatea eta elektronika | es_ES |