论文标题
与磁通量隔开的石墨烯中限制
Confinement in Gapped Graphene with Magnetic Flux
论文作者
论文摘要
我们研究了受磁通量$ ϕ $的圆形量子点中电子的传播。我们介绍了征收特征状态的分析表达式，散射系数，散射效率和反射电流的径向成分。我们将不同的散射状态识别为物理参数的函数，例如入射电子能量，潜在屏障，量子点的半径，间隙和$ ϕ $。我们选择两个磁通$ ϕ = 1/2、3/2 $的值，并表明对于入射电子的低能，散射共振出现，并且远场散射电流呈现出不同的首选散射方向。
We study the propagation of electrons in a circular quantum dot of gapped graphene subject to the magnetic flux $ϕ$. We present analytical expressions for the eigenstates, scattering coefficients, scattering efficiency and radial component of the reflected current. We identify different scattering regimes as a function of the physical parameters such as the incident electronic energy, potential barrier, radius of quantum dot, gap and $ϕ$. We choose two values of the flux $ϕ=1/2, 3/2$ and show that for low energy of the incident electron, the scattering resonances appear and the far-field scattered current presents distinct preferred scattering directions.
