title: AA stacking, tribological and electronic properties of double-layer graphene with krypton spacer.
abstract: Structural, energetic, and tribological characteristics of double-layer graphene with commensurate and incommensurate krypton spacers of nearly monolayer coverage are studied within the van der Waals-corrected density functional theory. It is shown that when the spacer is in the commensurate phase, the graphene layers have the AA stacking. For this phase, the barriers to relative in-plane translational and rotational motion and the shear mode frequency of the graphene layers are calculated. For the incommensurate phase, both of the barriers are found to be negligibly small. A considerable change of tunneling conductance between the graphene layers separated by the commensurate krypton spacer at their relative subangstrom displacement is revealed by the use of the Bardeen method. The possibility of nanoelectromechanical systems based on the studied tribological and electronic properties of the considered heterostructures is discussed.
authors.affiliation: Institute for Spectroscopy, Russian Academy of Sciences, Fizicheskaya Street 5, Troitsk, Moscow 142190, Russia.
authors.forename: Andrey M
authors.initials: AM
authors.lastname: Popov
authors.forename: Irina V
authors.initials: IV
authors.lastname: Lebedeva
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Knizhnik
authors.forename: Yurii E
authors.initials: YE
authors.lastname: Lozovik
authors.forename: Boris V
authors.initials: BV
authors.lastname: Potapkin
authors.forename: Nikolai A
authors.initials: NA
authors.lastname: Poklonski
authors.forename: Andrei I
authors.initials: AI
authors.lastname: Siahlo
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Vyrko
mesh_terms: D004583:Electrons; D006108:Graphite / Q000737:chemistry*; D007726:Krypton / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D007726:Krypton; D006108:Graphite