Band gap opening in methane intercalated graphene.
Recent experimental work has demonstrated production of quasi-free-standing graphene by methane intercalation. The intercalation weakens the coupling of adjacent graphene layers and yields Dirac fermion behaviour of monolayer graphene. We have investigated the electronic characteristics of a methane intercepted graphene bilayer under a perpendicularly applied electric field. Evolution of the band structure of intercalated graphene as a function of the bias is studied by means of density-functional theory including interlayer van der Waals interactions. The implications of controllable band gap opening in methane-intercalated graphene for future device applications are discussed.
Department of Physics and Center for Functional Nanoscale Materials, Clark Atlanta University, Atlanta, Georgia 30314, USA.
Jasmine
J
Hargrove
H B Mihiri
HB
Shashikala
Lauren
L
Guerrido
Natarajan
N
Ravi
Xiao-Qian
XQ
Wang
D004583:Electrons; D006108:Graphite / Q000737:chemistry*; D007364:Intercalating Agents / Q000737:chemistry*; D008697:Methane / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation
D007364:Intercalating Agents; D006108:Graphite; D008697:Methane