Результаты исследований: Научные публикации в периодических изданиях › статья
Formation and Lithium Doping of Graphene on the Surface of Cobalt Silicide. / Usachov, D.Y.; Fedorov, A.V.; Vilkov, O.Y.; Erofeevskaya, A.V.; Vopilov, A.S.; Adamchuk, V.K.; Vyalikh, D.V.
в: Physics of the Solid State, Том 57, 2015, стр. 1040-1047.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - Formation and Lithium Doping of Graphene on the Surface of Cobalt Silicide
AU - Usachov, D.Y.
AU - Fedorov, A.V.
AU - Vilkov, O.Y.
AU - Erofeevskaya, A.V.
AU - Vopilov, A.S.
AU - Adamchuk, V.K.
AU - Vyalikh, D.V.
PY - 2015
Y1 - 2015
N2 - The intercalation of silicon under graphene on the Co(0001) surface, which is accompanied by the formation of a silicon solid solution in cobalt and by the formation of a surface crystalline Co2Si phase, has been investigated using photoelectron spectroscopy. It has been shown that the formation of cobalt silicide leads to a substantial weakening of the hybridization of electronic states of graphene and cobalt and to the recovery of the Dirac spectrum of electronic states of graphene near the Fermi level. This has made it possible to investigate the electron doping of graphene on the cobalt silicide substrate upon deposition of lithium on its surface. It has been found that doping with lithium leads to a significant charge transfer onto graphene, and the electron concentration reaches 3.1E14 1/cm^2 . Moreover, the specific form of the Fermi surface creates favorable conditions for the enhancement of the electron–phonon coupling. As a result, the formed system can be considered as a candidate for the creation
AB - The intercalation of silicon under graphene on the Co(0001) surface, which is accompanied by the formation of a silicon solid solution in cobalt and by the formation of a surface crystalline Co2Si phase, has been investigated using photoelectron spectroscopy. It has been shown that the formation of cobalt silicide leads to a substantial weakening of the hybridization of electronic states of graphene and cobalt and to the recovery of the Dirac spectrum of electronic states of graphene near the Fermi level. This has made it possible to investigate the electron doping of graphene on the cobalt silicide substrate upon deposition of lithium on its surface. It has been found that doping with lithium leads to a significant charge transfer onto graphene, and the electron concentration reaches 3.1E14 1/cm^2 . Moreover, the specific form of the Fermi surface creates favorable conditions for the enhancement of the electron–phonon coupling. As a result, the formed system can be considered as a candidate for the creation
U2 - 10.1134/S1063783415050297
DO - 10.1134/S1063783415050297
M3 - Article
VL - 57
SP - 1040
EP - 1047
JO - Physics of the Solid State
JF - Physics of the Solid State
SN - 1063-7834
ER -
ID: 3930456