Regular Article

Energy band and transport properties in magnetic aperiodic graphene superlattices of Thue-Morse sequence

¹ School of Instrument Science and Optoelectronic Engineering, Beihang University, 100191 Beijing, P.R. China
² Qingdao Key Laboratory of Terahertz Technology, College of Electronic Communication and Physics, Shandong University of Science and Technology, 266590 Qingdao, P.R. China

^a e-mail: niuyx@buaa.edu.cn

Received: 19 August 2015
Revised: 21 December 2015
Accepted: 5 January 2016
Published online: 29 February 2016

Abstract

Utilizing the transfer matrix method, we develop the electronic band structure and transport properties in Thue-Morse aperiodic graphene superlattices with magnetic barriers. It is found that the normal transmission is blocked and the position of the Dirac point can be shifted along the wavevector axis by changing the height and width ratio of magnetic barriers, which is intrinsic different from electronic field modulated superlattices. In addition, the angular threshold property of the transmission spectra and the oscillatory property of the conductance have been studied.