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Controlled Ambipolar Tuning and Electronic Superlattice Fabrication of Graphene via Optical Gating

Authors

  • Ji Qi,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Hui Zhang,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Dandan Ji,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Xiaodong Fan,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Long Cheng,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Haixing Liang,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Hui Li,

    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Changgan Zeng,

    Corresponding author
    1. Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
    2. International Center for Quantum Design of Functional Materials (ICQD), HFNL, University of Science and Technology of China, Hefei, Anhui, China
    3. Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui, China
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  • Zhenyu Zhang

    1. International Center for Quantum Design of Functional Materials (ICQD), HFNL, University of Science and Technology of China, Hefei, Anhui, China
    2. Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui, China
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Abstract

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A novel optical gating method is demonstrated to achieve controllable ambipolar tuning of graphene on diverse semiconductor substrates. Furthermore, electronic fabrication to form erasable electronic superlattices in structurally homogenous graphene is proposed based on selective optical gating. The created p-p+ superlattices exhibits counterintuitive transport properties, which can be attributed to nonlinear effects in the carrier dynamics around the interfaces.

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