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The effect of interlayer coupling on electron transport in graphene nanoribbons: a potential method for nanoposition
Jing Wang1, Zijing Lin, K S Chan
1Department of Physics, University of Science and Technology of China, Hefei, People's Republic of China. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong. City University of Hong Kong Shenzhen Research Institute, Shenzhen, People's Republic of China.
Abstract:
We report a study on the effect of electron transport in a monolayer armchair graphene nanoribbon due to coupling to another monolayer armchair graphene ribbon, which is put on top of the first one. The conductance of the bottom ribbon oscillates when the top ribbon moves, and the oscillation can be used to determine stepwise position changes of the top ribbon for step sizes as small as 3.68 Å. The conductance oscillation arises from the rapid electron probability oscillations in the lowest three subbands of an armchair graphene ribbon. The phenomenon has potential applications in nanoposition sensing.
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