Helium reflectivity and Debye temperature of graphene grown epitaxially on Ru(0001)
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Physical SocietyDate
2011-07-29Citation
10.1103/PhysRevB.84.035450
Physical Review B 84.3 (2011): 035450
ISSN
1550-235X (online); 1098-0121 (print)DOI
10.1103/PhysRevB.84.035450Funded by
This work was supported by the Ministerio de Educación y Ciencia through the program CONSOLIDER-INGENIO on Molecular Nanoscience (Project No. CSD 2007-00010), Project No. FIS2010-18847, and a Juan de la Cierva grant (A.P.), and by Comunidad de Madrid through the program NANOBIOMAGNETProject
Comunidad de Madrid. 2009/MAT1726/NANOBIOMAGNET; Gobierno de España. CSD2007-00010; Gobierno de España. FIS2010-18847Editor's Version
http://dx.doi.org/10.1103/PhysRevB.84.035450Subjects
FísicaRights
© 2011 American Physical SocietyAbstract
It is shown that the surface of an epitaxial graphene monolayer grown on Ru(0001) could be used as a quite efficient external mirror for He-atom microscopy, with a specular reflectivity of 20% of the incident beam. Furthermore, the system is stable up to 1150 K, and the He reflectivity remains almost unchanged after exposure to air. Additionally, the high reflectivity for H2 molecules (11%) opens up the development of a H2 microprobe suitable for lithography. The Debye temperature for this epitaxial graphene monolayer has been determined from a study of the temperature dependence of the He specular intensity as a function of incident parameters. A value of 1045 K has been obtained, which is much higher than the 590 K reported for graphite under similar conditions, and close to the value of 1287 K calculated for isolated graphene
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Google Scholar:Politano, A.
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Borca, B.
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Minniti , Marina
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Hinarejos, J. J.
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Vázquez De Parga, A. L.
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Farias Tejerina, Daniel
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Miranda Soriano, Rodolfo
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