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. 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
Creators:
CreatorsEmailORCID
Usachov, DmitryUNSPECIFIEDUNSPECIFIED
Fedorov, Alexander V.UNSPECIFIEDUNSPECIFIED
Otrokov, Mikhail M.UNSPECIFIEDUNSPECIFIED
Chikina, AllaUNSPECIFIEDUNSPECIFIED
Vilkov, OlegUNSPECIFIEDUNSPECIFIED
Petukhov, AnatolyUNSPECIFIEDUNSPECIFIED
Rybkin, Artem G.UNSPECIFIEDUNSPECIFIED
Koroteev, Yury M.UNSPECIFIEDUNSPECIFIED
Chulkov, Evgueni V.UNSPECIFIEDUNSPECIFIED
Adamchuk, Vera K.UNSPECIFIEDUNSPECIFIED
Grueneis, AlexanderUNSPECIFIEDUNSPECIFIED
Laubschat, ClemensUNSPECIFIEDUNSPECIFIED
Vyalikh, Denis V.UNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-81454
DOI: 10.1021/nl504693u
Journal or Publication Title: Nano letters
Publisher: ACS Publications
ISSN: 1530-6992
Volume: 15
Number: 4
Subjects: Natural sciences and mathematics
Physics
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Institute of Physics II
Language: English
Date: 3 March 2015
Full Text Status: Public
Date Deposited: 28 Mar 2018 09:03
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
Status: Published
Page Range: pp. 2396-2401
URI: http://kups.ub.uni-koeln.de/id/eprint/8145

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