Two-Dimensional Graphene Superlattice:Energy Spectrum and Current-Voltage Characteristics

Author(s) S.V. Kryuchkov1,2 , C.A. Popov1

1 Volgograd State Socio-Pedagogical University, Physical Laboratory of Low-Dimensional Systems, 27, Lenin Ave., 400066 Volgograd, Russia

2 Volgograd State Technical University, 28, Lenin Ave. 400005 Volgograd, Russia

Issue Volume 9, Year 2017, Number 2
Dates Received 07 February 2017; published online 28 April 2017
Citation S.V. Kryuchkov, C.A. Popov, J. Nano- Electron. Phys. 9 No 2, 02013 (2017)
DOI 10.21272/jnep.9(2).02013
PACS Number(s) 73.21.Cd, 72.20.Ht
Key words Graphene (14) , Two-dimensional superlattice (2) , Energy spectrum, Current-voltage characteristics (3) , Constant electric field.
Annotation The properties of two-dimensional graphene-based superlattice are studied. The creation of a two-dimensional periodic potential in the graphene layer is assumed to be alternating in a checkerboard pattern of rectangular areas of the substrate materials. For this system the energy spectrum and an expression for the current in the graphene layer were obtained. The influence of a transverse constant electric field on the current is investigated. It is shown that the presence of the transverse field leads to the appearance of an additional peak in the current-voltage characteristics of the superlattice.