| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Transport and Conductance in Fibonacci Graphene Superlattices with Electric and Magnetic Potentials |
| Yi-Heng Yin, Yan-Xiong Niu**, Ming Ding, Hai-Yue Liu, Zhen-Jiang Liang |
School of Instrument Science and Optoelectronic Engineering, Beihang University, Beijing 100191
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| Cite this article: |
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Yi-Heng Yin, Yan-Xiong Niu, Ming Ding et al 2016 Chin. Phys. Lett. 33 057202 |
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Abstract We investigate the electron transport and conductance properties in Fibonacci quasi-periodic graphene superlattices with electrostatic barriers and magnetic vector potentials. It is found that a new Dirac point appears in the band structure of graphene superlattice and the position of the Dirac point is exactly located at the energy corresponding to the zero-averaged wave number. The magnetic and electric potentials modify the energy band structure and transmission spectrum in entirely diverse ways. In addition, the angular-dependent transmission is blocked by the potential barriers at certain incident angles due to the appearance of the evanescent states. The effects of lattice constants and different potentials on angular-averaged conductance are also discussed.
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Received: 23 December 2015
Published: 31 May 2016
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| PACS: |
72.10.-d
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(Theory of electronic transport; scattering mechanisms)
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73.20.At
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(Surface states, band structure, electron density of states)
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73.23.-b
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(Electronic transport in mesoscopic systems)
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