论文标题
有偏双层石墨烯中的集体激发：温度效应
Collective excitations in biased bilayer graphene: Temperature effects
论文作者
论文摘要
我们已经研究了随机相近似中有偏双层石墨烯中集体激发的温度影响。从系统的温度动力学介电函数的零，我们发现了一种弱阻尼的等离子体模式。对于给定的静电势偏置，在低（高）温度t下，等离子频率随T稍微变化（明显增加）。我们还研究了潜在偏置和载体密度对有限温度下系统频率的影响。
We have studied the temperature effect on collective excitations in biased bilayer graphene within random-phase approximation. From the zeros of temperature dynamical dielectric function of the system we have found one weakly damped plasmon mode. For a given electrostatic potential bias, at low (high) temperature T the plasmon frequency changes slightly (increases remarkably) with T. We have also studied the effects of potential bias and carrier density on the plasmon frequency of the system at finite temperatures.
