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首页> 外文期刊>Optical and quantum electronics >Resonant tunneling though an asymmetrical two-magnetic-barrier structure on single layer graphene
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Resonant tunneling though an asymmetrical two-magnetic-barrier structure on single layer graphene

机译：通过单层石墨烯上不对称的两磁势垒结构的共振隧穿

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摘要

The transmission probability against the electron normal incident energy through an asymmetrical two-magnetic-barrier structure of single layer graphene has been investigated and presented. One barrier's height and width are varied while those of the other are kept at constant values. The effect of the structural asymmetry on the resonance energy and the resonant transmission peak value are also systematically studied with the help of numerical calculations based on the transfer matrix method. Investigations show that the unity transmission occurs in an asymmetrical two-magnetic-barrier structure when both the phase difference condition for resonance (PDCR) and the maximum condition for the resonance peak value (MCPV) are satisfied simultaneously. However, PDCR underestimates the resonance energy of an asymmetrical two-magnetic-barrier structure, and the deviation becomes more obvious as the structure progressively becomes less symmetrical. These findings are believed to be of significant importance for the design of single layer graphene based devices.
机译：研究并提出了通过单层石墨烯的不对称双磁势垒结构对电子法向入射能的传输概率。一个障碍的高度和宽度是变化的，而另一障碍的高度和宽度则保持恒定。借助于基于传递矩阵法的数值计算，还系统地研究了结构不对称对共振能量和共振传输峰值的影响。研究表明，当同时满足共振的相位差条件（PDCR）和共振峰值的最大条件（MCPV）时，统一传输会在不对称的两磁势垒结构中发生。但是，PDCR低估了非对称两磁势垒结构的共振能量，并且随着结构逐渐变得不对称，偏差变得更加明显。这些发现被认为对于基于单层石墨烯的器件的设计具有重要意义。

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  • 来源
    《Optical and quantum electronics》 |2017年第7期|250.1-250.9|共9页
  • 作者

    Huaizhe Xu; Sheng Feng; Yaping Zhang; Jinliang Wang; Shichao Zhang;

  • 作者单位

    State Key Laboratory of Software Development Environment and Department of Physics, Beihang University, Beijing 100191, China;

    State Key Laboratory of Software Development Environment and Department of Physics, Beihang University, Beijing 100191, China;

    Faculty of Engineering, The University of Nottingham Ningbo, Ningbo 315100, China;

    State Key Laboratory of Software Development Environment and Department of Physics, Beihang University, Beijing 100191, China;

    School of Materials Science and Engineering, Beihang University, Beijing 100191, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Resonant tunneling; Asymmetrical two-magnetic barriers; Resonance energy;

    机译：共振隧道不对称的两磁势垒;共振能量;

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