论文标题
受到激光和磁场的应变石墨烯的传播
Transmission in strained graphene subjected to laser and magnetic fields
论文作者
论文摘要
我们通过磁性屏障和线性极化的电磁波研究沿扶手椅和曲折方向沿扶手椅和曲折方向的应变对石墨烯中电运的影响。在Floquet理论的背景下，通过分析计算特征值和相关的特征委员会。传输概率使用传输矩阵方法和边界条件在两个具有电流密度的接口处表示为不同参数的函数。我们认为，随着屏障宽度和入射能的变化，通过中心带的传输在零应变下振荡较少。跨第一个边带的传输始于0，并遵循正弦函数的模式，该模式随着屏障宽度的增加而生长，并且对于较大的入射能而言几乎是线性的。当激活应变幅度时，所有传输通道中的振荡次数在扶手椅方向略有下降，但在锯齿形方向急剧增加。发现总传输的行为与中央频带的行为相当，但它表现为向上的翻译。在正常入射率下抑制klein隧道是在所有应变设置中都可以看到的另一个结果。
We investigate the effect of strain along armchair and zigzag directions on electrical transport in graphene through a magnetic barrier and a linearly polarized electromagnetic wave. In the context of Floquet theory, the eigenvalues and related eigenspinors are calculated analytically. The transmission probabilities are expressed as a function of different parameters using the transfer matrix approach and boundary conditions at two interfaces with current densities. We see that as the barrier width and incident energy change, the transmission via the center band oscillates less at zero strain. The transmission across the first sidebands begins at 0 and follows the pattern of a sinusoidal function that grows with increasing barrier width and becomes nearly linear for larger incident energy. When the strain magnitude is activated, the number of oscillations in all transmission channels drops marginally in the armchair direction but increases dramatically in the zigzag direction. The behavior of the total transmission is found to be comparable to that of the central band, with the exception that it exhibits a translation to the up. The suppression of Klein tunneling at normal incidence is another result seen in all strain settings.
