Optical properties of doped graphene layers
Optical properties of doped graphene layers
复制标题
DOI：
10.1134/s1063776108030175
复制
发表时间：
2008-05
影响因子：
1.1
通讯作者：
L. A. Falkovsky
中科院分区：
文献类型：
--
作者：
L. A. Falkovsky
在红外范围内计算石墨烯单层以及单层系统的反射率。在计算中使用的无碰撞制度，取决于频率，温度和载流子浓度的电导率的量子表达式。在带间电子吸收阈值以上，反射率随频率的增加而减小。随着温度的降低，层的系统中的等离子体激元的激发是可能的在阈值附近的一个狭窄的范围内，这导致在反射率的频率依赖性的深和尖锐的最小值的发生。
The reflectance of a graphene monolayer, as well as of a system of monolayers, is calculated in the infrared range. A quantum expression for the conductivity in the collisionless regime that depends on the frequency, the temperature, and the concentration of carriers is used in the calculations. Above the threshold of the interband electron absorption, the reflectance decreases with increasing frequency. With decreasing temperature, excitation of plasmons in the system of layers is possible in a narrow range near the threshold, which results in the occurrence of a deep and sharp minimum in the frequency dependence of the reflectance.