| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Transport through a Gate Tunable Graphene Double Quantum Dot |
| ZHOU Cheng, TU Tao**, WANG Li, LI Hai-Ou, CAO Gang, GUO Guang-Can, GUO Guo-Ping** |
Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026
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| Cite this article: |
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ZHOU Cheng, TU Tao, WANG Li et al 2012 Chin. Phys. Lett. 29 117303 |
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Abstract We demonstrate how molecular states of coupled graphene quantum dots are probed in transport experiments. The applied method measures the sequential tunneling of electrons through the double dot and hence resolves the molecular state transport channel simultaneously. The overlap of the two dots' wavefunctions, and in turn, the tunnel coupling between the two dots are controlled by the local gates. These results imply the relevance of our graphene device for implementing a quantum manipulation by adjusting the electrodes.
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Received: 26 July 2012
Published: 28 November 2012
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| PACS: |
73.22.-f
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(Electronic structure of nanoscale materials and related systems)
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72.80.Rj
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(Fullerenes and related materials)
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73.21.La
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(Quantum dots)
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75.70.Ak
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(Magnetic properties of monolayers and thin films)
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