论文标题
双层有偏双层石墨烯中的等离子模式
Plasmon modes in double-layer biased bilayer graphene
论文作者
论文摘要
我们研究了垂直静电偏置下的双层双层石墨烯结构中的零温血浆模式。数值结果表明，存在两个集体模式，它们在长波长极限中没有阻碍。与无偏见的情况相比，有限的电位偏差显着降低了等离激元能量，并使等离激元分支在较高的波形载体下降低了Landau。我们发现，在两种患有和没有静电偏置的情况下，等离子体分散剂对系统参数（例如层间分离和载体密度）的依赖性相似。
We investigate zero-temperature plasmon modes in a double-layer bilayer graphene structure under a perpendicular electrostatic bias. The numerical results demonstrate that there exist two collective modes which are undamped in the long wavelength limit. The finite potential bias decreases remarkably the plasmon energy in a wide range of wave-vector and makes plasmon branches become Landau damped at a higher wave-vector as compared to unbiased case. We find that the dependence of plasmon dispersions on the system parameters such as the inter-layer separation and carrier density is similar in two cases with and without electrostatic bias.
