title: Binding graphene sheets together using silicon: graphene/silicon superlattice.
abstract: We propose a superlattice consisting of graphene and monolayer thick Si sheets and investigate it using a first-principles density functional theory. The Si layer is found to not only strengthen the interlayer binding between the graphene sheets compared to that in graphite, but also inject electrons into graphene, yet without altering the most unique property of graphene: the Dirac fermion-like electronic structure. The superlattice approach represents a new direction for exploring basic science and applications of graphene-based materials.
authors.affiliation: Department of Electrical and Computer Engineering and Center for Optoelectronics, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA. yong.zhang@uncc.edu.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Raphael
authors.initials: R
authors.lastname: Tsu