Combined effect of Aharonov-Bohm effect and uniaxial strain on
quantum conductance oscillations of carbon nanotube resonators |
| |
| Authors: | Y Zhang and M Han |
| |
| Institution: | (1) Department of Chemistry and Institute of Applied Chemistry, Chinese Culture, University, Taipei, 111, Taiwan, ROC;(2) Department of Mechanical and Electro-Mechanical Engineering, Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan, ROC;(3) Department of Mechanical Engineering, National United University, Miao-Li, 36003, Taiwan, ROC;(4) State Key Laboratory of Materials Modification by Laser, Electron, and Ion Beam, School of Physics and Optoelectronic Technology and College of Advanced Science and Technology, Dalian University of Technology, Dalian, 116024, China;(5) National Center for High-Performance Computing, No. 28, Nan-Ke Third Road, Hsin-Shi, Tainan, 74147, Taiwan, ROC; |
| |
| Abstract: | Using the π orbital tight-binding model and the
multi-channel Laudauer-Büttiker formula, the combined effect of
Aharonov-Bohm effect (induced by an axial magnetic field) and uniaxial
strain on quantum conductance oscillations of the electronic Fabry-Perot
resonators composed of armchair and metallic zigzag single-walled carbon
nanotubes (SWNTs) has been studied. It is found that, for the case of the
armchair SWNT, conductance oscillations near the band gap are dominated by
Aharonov-Bohm effect, while the conductance oscillations in other regions
are dominated by the uniaxial strains. The combined effect of Aharonov-Bohm
effect and uniaxial strains on quantum conductance oscillations is not
obvious. But, for the case of the metallic zigzag SWNTs, obvious
single-channel transport and one or two conductance oscillations existing in
two different gate voltage ranges were found by the combined effect of
uniaxial strain and axial magnetic field. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
