论文标题
石墨烯量子点中质量向内的电子散射
Electron scattering of mass-inverted in graphene quantum dots
论文作者
论文摘要
我们研究圆形石墨烯量子点的狄拉克电子的散射，其质量为静电势。所获得的能量光谱溶液用于确定两个区域界面处的散射系数。使用大量参数的渐近溶液，我们明确确定反射电流密度和散射效率的径向分量。发现除了量子点内的另一个外，质量术语的存在强烈影响电子的散射。特别是，在零能量下发现散射系数的非零正方形模量。
We study the scattering of Dirac electrons of circular graphene quantum dot with mass-inverted subject to electrostatic potential. The obtained solutions of the energy spectrum are used to determine the scattering coefficients at the interface of the two regions. Using the asymptotic solutions at large arguments, we explicitly determine the radial component of reflected current density and the scattering efficiency. It is found that the presence of a mass term outside in addition to another one inside the quantum dot strongly affects the scattering of electrons. In particular, a non-null square modulus of the scattering coefficient is found at zero energy.
