Usachov, Dmitry, Fedorov, Alexander V., Otrokov, Mikhail M., Chikina, Alla, Vilkov, Oleg, Petukhov, Anatoly, Rybkin, Artem G., Koroteev, Yury M., Chulkov, Evgueni V., Adamchuk, Vera K., Grueneis, Alexander, Laubschat, Clemens and Vyalikh, Denis V.
(2015).
Observation of single-spin Dirac fermions at the graphene/ferromagnet interface.
Nano letters, 15 (4).
pp. 2396-2401.
ACS Publications.
ISSN 1530-6992
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Abstract
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.
| Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| URN: | urn:nbn:de:hbz:38-81454 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1021/nl504693u | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Nano letters | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Volume: | 15 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Number: | 4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Page Range: | pp. 2396-2401 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Date: | 3 March 2015 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Publisher: | ACS Publications | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ISSN: | 1530-6992 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Language: | English | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Faculty: | Faculty of Mathematics and Natural Sciences | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Divisions: | Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Subjects: | Natural sciences and mathematics Physics |
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| Funders: | ERC Grant Super2D, GIC07-IT-756-13, FIS2010-19609-C02-01, RFBR (Grant 14-02-31150), BMBF (Grant 05K12OD3), Saint-Petersburg State University Grant 11.37.634.2013, Saint-Petersburg State University Grant 11.50.202.2015 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refereed: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| URI: | http://kups.ub.uni-koeln.de/id/eprint/8145 |
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