论文标题
单层石墨烯中的磁脉冲触发terahertz吸收：一种通用方法
Magneto-tunable terahertz absorption in single-layer graphene: A general approach
论文作者
论文摘要
在将静态磁场应用于其超快速的2D Dirac电子时，可以显着修改石墨烯中的Terahertz（THZ）各向异性吸收。通常，通过在施加的磁场下推导单层石墨烯的广义菲涅尔系数，可以实现相对较高的各向异性吸收，以实现具有特定散射角的传入线性偏振光。我们还证明，单层石墨烯的光吸收很好地对应于在存在静态磁场的情况下其表面光学电导率。此外，石墨烯的温度依赖性电导率使得可以表明，逐步吸收特征将在非常低的温度下出现。我们认为，这些特性可以被认为是在基于石墨烯的新型THZ应用中使用的。
Terahertz (THz) anisotropic absorption in graphene could be significantly modified upon applying a static magnetic field on its ultra-fast 2D Dirac electrons. In general, by deriving the generalized Fresnel coefficients for monolayer graphene under applied magnetic field, relatively high anisotropic absorption for the incoming linearly polarized light with specific scattering angles could be achieved. We also prove that the light absorption of monolayer graphene corresponds well to its surface optical conductivity in the presence of a static magnetic field. Moreover, the temperature-dependent conductivity of graphene makes it possible to show that a step by step absorption feature would emerge at very low temperatures. We believe that these properties may be considered to be used in novel graphene-based THz application.
