论文标题
应变对石墨烯磁性屏障中隧道时间的影响
Effect of strain on tunneling time in graphene magnetic barrier
论文作者
论文摘要
我们在石墨烯的三个区域中求解了狄拉克方程，以获取与应变，能隙和磁场有关的能量求解。在匹配接口处的波函数后，将固定相位近似应用在匹配的波浪函数后，将获得鹅孔的偏移和组延迟时间。我们的结果表明，组延迟时间受扶手椅和锯齿形方向的应变的影响。我们表明，栅极电压和应变具有将群体延迟从溢流性转换为超浮肿性的能力。这可能在高速石墨烯基纳米电子学中具有重要用途。
We solve the Dirac equation in three regions of graphene to get the solutions of the energy spectrum in connection to the strain, energy gap, and magnetic field. The Goos-Hänchen shifts and group delay time will be obtained by applying the stationary phase approximation after the wave functions at the interfaces have been matched. Our results suggest that the group delay time is influenced by the presence of strain along the armchair and zigzag directions. We show that the gate voltage and strain have the ability to change the group delay from subluminality to superluminality. This may have significant uses in high-speed graphene-based nanoelectronics.
