论文标题
层间耦合的浮点工程：在波导出口处调整扭曲的双层石墨烯的神奇角度
Floquet engineering of interlayer couplings: Tuning the magic angle of twisted bilayer graphene at the exit of a waveguide
论文作者
论文摘要
我们引入了一种新方法，该方法可以通过在波导的末端用纵向的光照射光照，从而可以完全控制几层范德华异质结构中有效扭曲角变化的调制。作为一种特定的应用，我们考虑了扭曲的双层石墨烯，并表明可以将魔法角度调整为更大或更小，从而可以对该相关材料的相位图的原位实验控制。波导允许在没有光的纵向电场成分的情况下绕过自由空间约束。我们建议将扭曲的双层石墨烯放置在波导出口处的特定位置，以便将其受到横向磁模式（TM）波的纯纵向成分。
We introduce a new approach that allows one complete control over the modulation of the effective twist angle change in few-layer van der Waals heterostructures by irradiating them with longitudinal waves of light at the end of a waveguide. As a specific application, we consider twisted bilayer graphene and show that one can tune the magic angles to be either larger or smaller, allowing in-situ experimental control of the phase diagram of this and other related materials. A waveguide allows one to circumvent the free-space constraints on the absence of longitudinal electric field components of light. We propose to place twisted bilayer graphene at a specific location at the exit of a waveguide, such that it is subjected to purely longitudinal components of a transverse magnetic modes (TM) wave.
