中文摘要：

我们在电子上抽的多重 graphene 层(MGL ) 建议表面电浆子(SP ) 结构，并且计算动态电导率和吸收系数的功能。同时，不同因素上的吸收系数的依赖被模仿。当吸收系数是否定的时， SP 能得到获得，并且 SP 获得能被阴沉的温度提高，使用高偏爱电压并且选择有合适的层数字和长动量松驰时间的 graphene。SP 获得上的学习是有希望的在放大器和基于 graphene 的电浆子设备被过去常。

英文摘要：

We propose a surface plasmon（SP） structure in electrically pumped multiple graphene-layer（MGL）, and calculate the functions of dynamic conductivity and absorption coefficient. Meanwhile, the dependences of absorption coefficient on different factors are simulated. SP can get gain when absorption coefficient is negative, and the SP gain can be enhanced by lowering temperature, applying high bias voltage and choosing the graphene with proper layer number and long momentum relaxation time. The study on SP gain is hopeful to be used in amplifiers and graphene-based plasmon devices.