Přístupnostní navigace
E-application
Search Search Close
Publication detail
GIESBERS, A. UHLÍŘOVÁ, K. KONEČNÝ, M. PETERS, E. BURKHARD, M. AARTS, J. FLIPSE, C.
Original Title
Interface-Induced Room-Temperature Ferromagnetism in Hydrogenated Epitaxial Graphene
Type
journal article - other
Language
English
Original Abstract
We show ferromagnetic properties of hydrogen-functionalized epitaxial graphene on SiC. Ferromagnetism in such a material is not directly evident as it is inherently composed of only nonmagnetic constituents. Our results nevertheless show strong ferromagnetism with a saturation of 0:9mí B=hexagon projected area, which cannot be explained by simple magnetic impurities. The ferromagnetism is unique to hydrogenated epitaxial graphene on SiC, where interactions with the interfacial buffer layer play a crucial role. We argue that the origin of the observed ferromagnetism is governed by electron correlation effects of the narrow Si dangling bond states in the buffer layer exchange coupled to localized states in the hydrogenated graphene layer. This forms a quasi-three-dimensional ferromagnet with a Curie temperature higher than 300 K.
Keywords
Graphene; Feromagnetism; SiC; Intercalation
Authors
GIESBERS, A.; UHLÍŘOVÁ, K.; KONEČNÝ, M.; PETERS, E.; BURKHARD, M.; AARTS, J.; FLIPSE, C.
RIV year
2013
Released
18. 10. 2013
ISBN
0031-9007
Periodical
Physical Review Letters
Year of study
111
Number
16
State
United States of America
Pages from
166101-1
Pages to
166101-5
Pages count
5