论文标题
电子传输跨越正常金属的石墨烯正常金属连接
Electron Transmission Across Normal Metal-Strained Graphene-Normal Metal Junctions
论文作者
论文摘要
已经研究了电子跨单个正常金属 - 磷酸（NG）和正常金属 - 透明烯正常金属（NGN）连接的传播。对于单个NG连接，针对无量纲界面跳跃的最大传输的曲线分别与系统电导率相似。在单个NG连接的电导率中，发病能量对传输的较小效果也可以发现其隧道行为与NGN连接的差异显着差异。关于NGN连接，在受到不同的入射能量，跳跃和应变强度时，传输和电导显示出更丰富的结构。应变强度的增加总是在传播中以不同角度诱导更多的共振峰，因此可以增强电导率。中层石墨烯段的长度的增加可以容纳更多的准共振状态，从而导致更大的共振峰和更丰富的传输结构。在单个NG和NGN连接中，由于应变强度的增强，可以观察到金属侧的波函数的增加，这可以用作检测石墨烯中应变强度的传感器。
The transmission of the electron across the single normal metal-graphene (NG) and normal-metal-graphene-normal-metal (NGN) junctions has been investigated. For the single NG junction, the profile of the maximum transmission which has been plotted against the dimensionless interface hopping respectively bears similarity to that of the conductance of the system. The minor effect of the incidence energy on transmission can also be found in conductance of the single NG junction whose tunneling behavior poses a striking difference from that of the NGN junction. Concerning with NGN junction, the transmission and conductance show more abundant structures when subjected to different incidence energies, interface hopping, and strain strengths. The increase of strain strength always induces more resonance peaks at different angles in transmission and can therefore enhance the conductance. The increase of length of the middle graphene segment can accommodate more quasi-resonance states, leading to the more resonance peaks and richer structures in transmission. In both single NG and NGN junctions, the increase of the wavefunction period on metal side(s) can be observed due to the enhancement of strain strength, which can serve as the sensor for the detection of the strain strength in graphene.
