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arXiv 0904.0587hep-thcond-mat.mes-hallmath-phmath.MP
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恒定磁场中的狄拉克费米子

Confined Dirac Fermions in a Constant Magnetic Field

Ahmed Jellal, Abdulaziz D. Alhaidari, Hocine Bahlouli

摘要:

在二维Dirac-振子势耦合下,我们得到了(2+1)维Dirac方程在垂直于平面的恒定磁场存在下的精确解.解空间由正能量解和负能量解组成,每个解根据方位角量子数的符号分为两个不连通的子空间,k = 0,\pm 1,\pm 2,.。以及回旋频率是大于还是小于振荡器频率。旋量波函数用相关的拉盖尔多项式表示。对于负k,相对论能谱是无限简并的,因为它与k无关。我们比较我们的结果与已经发表的工作,并指出这些发现的相关性的相对论性量子霍尔效应在一个封闭的潜力系统的制定。

英文摘要:

We obtain an exact solution of the Dirac equation in (2+1)-dimensions in the presence of a constant magnetic field normal to the plane together with a two-dimensional Dirac-oscillator potential coupling. The solution space consists of a positive and negative energy solution, each of which splits into two disconnected subspaces depending on the sign of an azimuthal quantum number, k = 0, \pm 1, \pm 2,... and whether the cyclotron frequency is larger or smaller than the oscillator frequency. The spinor wavefunction is written in terms of the associated Laguerre polynomials. For negative k, the relativistic energy spectrum is infinitely degenerate due to the fact that it is independent of k. We compare our results with already published work and point out the relevance of these findings to a systematic formulation of the relativistic quantum Hall effect in a confining potential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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