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Klein bound states in single-layer graphene

机译:单层石墨烯的Klein绑定状态

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摘要

The Klein paradox, introduced in the study of chiral tunneling in single-layer graphene, is shown to also manifest in graphene bound states with a 1D square-well potential. Such bound states occur both below and above the potential well. We derive bound-state wave functions, in the absence and in the presence of an external transverse magnetic field, and calculate the corresponding electronic currents and dipole transition rates, which can be experimentally probed. The role of parity and time-reversal symmetries is discussed. Our results are also relevant for the physics of bound states of light in periodic optical waveguide structures.
机译:在单层石墨烯的手性隧道研究中引入的Klein Paradox,显示在具有1D平方井电位的石墨烯界定状态下表现出。这些界定状态在潜在井下和高于潜在井。我们在不存在和在存在外部横向磁场的情况下获得绑定状态波函数,并计算相应的电子电流和偶极转换速率,可以通过实验探测。讨论了奇偶校验和时间逆转对称的作用。我们的研究结果也与周期光波导结构中光的束缚状态的物理相关。

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  • 来源
    《Physical review》 |2020年第8期|085435.1-085435.10|共10页
  • 作者

    Y.Avishai; Y.B. Band;

  • 作者单位

    Department of Physics and The Ilse Katz Center for Nano-Science Ben-Gurion University of the Negev Beer-Sheva Israel New-York Shanghai University 1555 Century Avenue Shanghai China Yukawa Institute for Theoretical Physics Kyoto Japan;

    Department of Physics and The Ilse Katz Center for Nano-Science Ben-Gurion University of the Negev Beer-Sheva Israel Department of Chemistry Ben-Gurion University of the Negev Beer-Sheva Israel;

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