Universität zu Köln

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

Preview

PDF Observation_of_S-s_Dirac_fermions_at_the_graphene-ferromagnet_interface.pdf - Submitted Version Download (1MB)

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:	Article
Creators:	Creators Email ORCID ORCID Put Code Usachov, Dmitry UNSPECIFIED UNSPECIFIED UNSPECIFIED Fedorov, Alexander V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Otrokov, Mikhail M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chikina, Alla UNSPECIFIED UNSPECIFIED UNSPECIFIED Vilkov, Oleg UNSPECIFIED UNSPECIFIED UNSPECIFIED Petukhov, Anatoly UNSPECIFIED UNSPECIFIED UNSPECIFIED Rybkin, Artem G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Koroteev, Yury M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chulkov, Evgueni V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Adamchuk, Vera K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Grueneis, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Laubschat, Clemens UNSPECIFIED UNSPECIFIED UNSPECIFIED Vyalikh, Denis V. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-81454
Identification Number:	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
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