Transport properties of AA-stacking bilayer graphene nanoribbons |
| |
| Authors: | Ning Xu BL Wang Daning Shi Chao Zhang |
| |
| Institution: | 1. Department of Physics, Yancheng Institute of Technology, Jiangsu 224051, China;2. Department of Physics, Nanjing University of Aeronautics and Astronautics, Jiangsu 210016, China;3. Engineering Department of Airport, Xuzhou Air College, Jiangsu 221000, China;1. Center of General Studies, National Kaohsiung Marine University, Kaohsiung 811, Taiwan;2. Department of Physics, National Cheng Kung University, Tainan 701, Taiwan;1. Department of Physics, School of Education, Can Tho University, Can Tho, Viet Nam;2. School of Graduate, College of Natural Sciences, Can Tho University, Can Tho, Viet Nam;3. C2N, Université Paris-sud, Université Paris Saclay, CNRS, 91405 Orsay, France;4. EM2C, CentraleSupélec, Université Paris Saclay, CNRS, 92295 Châtenay Malabry, France;1. College of Mechanics and Materials, Hohai University, Nanjing 210098, China;2. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China;1. Department of Physics, National Cheng Kung University, Tainan 701, Taiwan;2. Department of Physics and Texas Center for Superconductivity, University of Houston, TX 77204, USA;1. Department of Physics, Anhui Normal University, Wuhu, 241000, China;2. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China |
| |
| Abstract: | The transport properties of AA-stacking bilayer graphene nanoribbons (GNs) have been explored by using the nonequilibrium Green's function method and the Landauer–Büttiker formalism. It is found that in the case of zero bias, the interlayer coupling has pronounced effects on the conductance of bilayer GNs. The zigzag bilayer GNs remain metallic, but metallic armchair bilayer GNs will be semiconductor as the strength of interlayer coupling exceeds critical value. The first Van Hove singularities move close to the Dirac point for both armchair and zigzag bilayer GNs with the strength of interlayer coupling increasing. Some prominent conductance peaks around the Fermi energy are observed in zigzag bilayer GNs, when the top layer and bottom layer have different widths. In the presence of bias voltage, the I–V curves show that for armchair bilayer GNs, the interlayer interactions suppress current, while the interlayer interactions have almost no effect on the current for zigzag bilayer GNs. The ripples in bilayer GNs suppress electronic transport, especially for zigzag bilayer GNs. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
