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Chiral selective tunneling induced graphene nanoribbon switch |
Qin-wei SHI (石勤伟), Zheng-fei WANG (王征飞), Qun-xiang LI (李群祥), Jin-long YANG (杨金龙, ) |
| Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China |
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Abstract An armchair graphene nanoribbon switch has been designed based on the principle of the Klein paradox. The resulting switch displays an excellent on–off ratio performance. An anomalous tunneling phenomenon, in which electrons do not pass through the graphene nanoribbon junction even when the conventional resonance condition is satisfied, is observed in our numerical simulations. A selective tunneling rule is proposed to explain this interesting transport behavior based on our analytical results. Based on this selective rule, our switch design can also achieve the confinement of an electron to form a quantum qubit.
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| Keywords
switch
Klein paradox
graphene nanoribbon
selective tunneling
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Corresponding Author(s):
null,Email:jlyang@ustc.edu.cn
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Issue Date: 05 September 2009
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