论文标题
在存在恒定磁场的情况下2D Weyl材料
2D Weyl Materials in the Presence of Constant Magnetic Fields
论文作者
论文摘要
在这项工作中，我们研究了恒定的外部或人工磁场对2D Weyl材料非线性响应的影响。我们通过以扰动方式处理倾斜度来计算2D Weyl材料中倾斜锥的水平，并采用扰动理论来计算磁场诱导的校正对磁场诱导的Landau光谱。然后，我们将诱导电流计算为倾斜系数的函数，并提取通讯非线性信号。然后，我们分析改变倾斜参数如何影响非线性信号。我们的发现表明，通过在2D Weyl材料中适当地设计狄拉克锥的倾斜度的方向和程度，可以实现非线性响应的显着可调节性。
In this work we investigate the effect of a constant external, or artificial, magnetic field on the nonlinear response of 2D Weyl materials. We calculate the Landau Levels for tilted cones in 2D Weyl materials by treating the tilting in a perturbative manner, and employ perturbation theory to calculate the tilting-induced correction to the magnetic field induced Landau spectrum. We then calculate the induced current as a function of the tilting coefficients and extract the correspondent nonlinear signal. Then, we analyze how changing tilting parameter affects nonlinear signal. Our findings show the possibility of achieving a significant tunability of the nonlinear response, by suitably engineering the orientation and degree of tilt of Dirac cones in 2D Weyl materials.
