论文标题
石墨烯中的手性Luttinger液体通过辐照调节
Chiral Luttinger liquids in graphene tuned by irradiation
论文作者
论文摘要
我们表明，可以通过高频，圆形极化光线（正常与层的圆形光线）创建和调节手性共构型Luttinger液体，并在双层石墨烯的两个部分上具有不同的极化。由于时间反转的对称性破裂和Chern数字的不匹配，一维手性模式位于域壁上，偏振会发生变化。单层石墨烯在每个Dirac节点附近都有一个手性边缘模式，而在双层石墨烯中，每个Dirac节点附近都有两个手性模式。这些模式在高频驱动器下基本上具有静态电荷分布，并在库仑相互作用下形成手性Luttinger液体，可以通过驱动参数调整。我们还注意到，与双层石墨烯中的静电限制产生的Luttinger液体不同，这里没有后散射，因此我们沿节点的电线对疾病稳定。
We show that chiral co-propagating Luttinger liquids can be created and tuned by shining high frequency, circularly polarized light, normal to the layers, with different polarizations on two sections of bilayer graphene. By virtue of the broken time-reversal symmetry and the resulting mismatch of Chern number, the one-dimensional chiral modes are localized along the domain wall where the polarization changes. Single layer graphene hosts a single chiral edge mode near each Dirac node, whereas in bilayer graphene, there are two chiral modes near each of the Dirac nodes. These modes, under a high-frequency drive, essentially have a static charge distribution and form a chiral Luttinger liquid under Coulomb interaction, which can be tuned by means of the driving parameters. We also note that unlike the Luttinger liquids created by electrostatic confinement in bilayer graphene, here there is no back-scattering, and hence our wires along the node are stable to disorder.
