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Título: | Observation of single-spin Dirac fermions at the graphene/ferromagnet interface |
Autor: | Usachov, Dmitry Yu.; Otrokov, M. M. CSIC ORCID; Rybkin, Artem G.; Koroteev, Yuri M.; Chulkov, Eugene V. CSIC ORCID; Grüneis, Alexander; Vyalikh, Denis V. CSIC ORCID | Palabras clave: | Dirac cone Spin-resolved ARPES Spin polarization Electronic structure Graphene |
Fecha de publicación: | 2015 | Editor: | American Chemical Society | Citación: | Nano Letters 15(4): 2396-2401 (2015) | Resumen: | With the discovery and first characterization of graphene, its potential for spintronic applications was recognized immediately. Since then, an active field of research has developed trying to overcome the practical hurdles. One of the most severe challenges is to find appropriate interfaces between graphene and ferromagnetic layers, which are granting efficient injection of spin-polarized electrons. Here, we show that graphene grown under appropriate conditions on Co(0001) demonstrates perfect structural properties and simultaneously exhibits highly spin-polarized charge carriers. The latter was conclusively proven by observation of a single-spin Dirac cone near the Fermi level. This was accomplished experimentally using spin- and angle-resolved photoelectron spectroscopy, and theoretically with density functional calculations. Our results demonstrate that the graphene/Co(0001) system represents an interesting candidate for applications in devices using the spin degree of freedom. | URI: | http://hdl.handle.net/10261/136560 | DOI: | 10.1021/nl504693u | Identificadores: | doi: 10.1021/nl504693u issn: 1530-6984 e-issn: 1530-6992 |
Aparece en las colecciones: | (CFM) Artículos |
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