科研之友
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摘要
Based on a first-principles approach, the transport behaviors for undeformed and deformed carbon cumulene monatomic rings are investigated. The distinct negative differential resistance (NDR) behaviors can be observed in a certain range of deformations. The analysis on the microscopic nature reveals that the electronic transmission strength, position of molecular levels, and spatial distribution of molecular states can be altered by the applied bias and horizontal pressure, which are intrinsic origins of NDR behaviors. Our work suggests that a carbon atomic ring is a potential NDR device when deformations occur.
- 出版日期2011-6-16
- 单位长沙理工大学
