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Contact transparency inducing low bias negative differential resistance in two capped carbon nanotubes sandwiching σ barrier

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Abstract

A first-principles study of the transport properties of two capped (5, 5) carbon nanotubes sandwiching σ barrier is reported. Contact transparency at zero bias is obtained. Strong negative differential resistance effect with large peak-to-valley ratio of 1,124 % is present under very low bias, which may promise the potential applications in nano-electronic devices with low power dissipation in the future.

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Acknowledgments

The authors would like to acknowledge the support from the Special Foundation for Theoretical Physics Research Program of China (No. 11347128 and 11347212), National Natural Science Foundation of China (No. 61371057), National Special Fund for the Development of Major Research Equipment and Instruments (No. 2011YQ03013403), Jiangsu Province Natural Science Foundation of China (No. BK2012655).

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Authors and Affiliations

  1. School of Science, Nantong University, Nantong, Jiangsu, 226007, China

    Y. Min, J. H. Fang, C. G. Zhong, Z. C. Dong & J. F. Li

  2. School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China

    K. L. Yao

  3. Department of Physics, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou, 215006, China

    L. P. Zhou

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  1. Y. Min
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  2. J. H. Fang
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Correspondence to Y. Min.

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Min, Y., Fang, J.H., Zhong, C.G. et al. Contact transparency inducing low bias negative differential resistance in two capped carbon nanotubes sandwiching σ barrier. Appl. Phys. A 118, 367–371 (2015). https://doi.org/10.1007/s00339-014-8743-2

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  • DOI: https://doi.org/10.1007/s00339-014-8743-2

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