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Edge states in bilayer graphene in a magnetic field

机译:双层石墨烯在磁场中的边缘状态

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摘要

Edge states in biased bilayer graphene in a magnetic field are studied within the four-band continuum model. The analysis is done for the semi-infinite graphene plane and for the graphene ribbon of a finite width, in the cases of zigzag and armchair edges. Exact dispersion equations for the edge states and analytic expressions for their wave functions are written in terms of the parabolic cylinder functions. The spectrum of edge states for each type of the boundary conditions is found by numerically solving the corresponding dispersion equations. The low-energy modes localized at zigzag edges are explored in detail.
机译:在四波段连续谱模型中研究了偏置的双层石墨烯在磁场中的边缘状态。对于之字形和扶手椅状边缘,对半无限石墨烯平面和有限宽度的石墨烯带进行了分析。边缘状态的精确色散方程和波动函数的解析表达式是根据抛物柱面函数编写的。通过数值求解相应的色散方程,可以找到每种边界条件的边缘态谱。详细探讨了位于锯齿形边缘的低能模式。

著录项

  • 来源
    《Physical review》 |2013年第20期|205417.1-205417.14|共14页
  • 作者

    P. K. Pyatkovskiy;

  • 作者单位

    Department of Applied Mathematics, Western University, London, Ontario N6A 5B7, Canada;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    quantum hall effects; landau levels;

    机译:量子霍尔效应兰道水平;

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