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Electron transport through phenylene sandwiched between zigzag graphene nanoribbons

  • A-Long Yao
  • Yao-Jun Dong
  • Xue-Feng WangEmail author
  • Yu-Shen Liu
Original Article
  • 21 Downloads

Abstract

We study systematically the electron transport through a phenylene rotor with an axis of atomic carbon chain (CPC) connected to twofold symmetric electrodes of nonmagnetic zigzag graphene nanoribbons. The density functional theory combined with the nonequilibrium Green’s function method is employed for the simulation. The CPC rotor is conductive with parabolic IV characteristic when its ring is coplanar with the electrodes. Its rotation modulates the symmetry of its electron states and their matching to the states in the electrodes. The IV curve then becomes characterized by sharp peaks with strong negative differential resistance (NDR) in a large range of the rotation angle. The corresponding shift of transport modes in energy with the rotation opens a way to efficient and accurate manipulation of NDR.

Keywords

Graphene Zigzag nanoribbon Electron transport Phenylene 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant nos. 61674110, 91121021, 11747097, 61674022).

Compliance with ethical standards

Conflict of interest

None of the authors of this manuscript have any competing interests.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Jiangsu Key Laboratory of Thin Films, School of Physical Science and TechnologySoochow UniversitySuzhouChina
  2. 2.College of Physics and EngineeringChangshu Institute of TechnologyChangshuChina
  3. 3.Key Laboratory of Terahertz Solid-State TechnologyChinese Academy of SciencesShanghaiChina

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