科研之友
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摘要
Using the pi orbital tight-binding model and the multi-channel Laudauer-Buttiker formula, both the effects of the Aharonov-Bohm effect and the curvature on quantum conductance oscillations of the electron resonators composed of armchair and primary zigzag single-walled carbon nanotubes (SWNTs) in an axial magnetic field have been studied. It is found that the rapid and slow conductance oscillation periods of the armchair SWNTs depend on both the magnetic field and gate voltage in addition to the sample length. More interestingly, for the case of the primary zigzag SWNTs, one or two conductance oscillations in two different ranges of gate voltages was found for the first time, which would not exist without the curvature effect and should be observed in future experiments.
- 出版日期2009-10
- 单位南京工业大学
