论文标题
单层和双层石墨烯的高谐波一代
High-Harmonic Generation from Monolayer and Bilayer Graphene
论文作者
论文摘要
固体中的高谐波产生（HHG）是一种探测Attosecond TimeScale固体中超快电子动力学的新兴方法。在这项工作中，我们从单层和双层石墨烯中学习HHG。在这项工作中，考虑了带有AA和AB堆叠的双层石墨。发现单层和双层石化剂表现出明显不同的谐波光谱。光谱的差异归因于两层之间的层间耦合。同样，对总谐波频谱的内标和边界间贡献起着重要作用。此外，单层和双层石墨烯的总谐波谱中发现了有趣的极化和椭圆度依赖性。
High-harmonic generation (HHG) in solids is an emerging method to probe ultrafast electron dynamics in solids at attosecond timescale. In this work, we study HHG from monolayer and bilayer graphene. Bilayer graphenes with AA and AB stacking are considered in this work. It is found that the monolayer and bilayer graphenes exhibit significantly different harmonic spectra. The difference in the spectra is attributed to the interlayer coupling between the two layers. Also, the intraband and interband contributions to the total harmonic spectrum play a significant role. Moreover, interesting polarization and ellipticity dependence are noticed in total harmonic spectrum for monolayer and bilayer graphene.
