Cooperative evolution of intraband and interband excitations for high-harmonic generation in strained MoS 2
作者： Meng-Xue Guan , Chao Lian , Shi-Qi Hu , Hang Liu , Sheng-Jie Zhang
DOI: 10.1103/PHYSREVB.99.184306
关键词:
摘要: Modulating electronic structure of two-dimensional materials represents an exciting avenue for tailoring their optoelectronic properties. Here, we identify a strain-induced, cooperative effect of intraband and interband excitations contributing to high-harmonic generation (HHG) in prototype dichalcogenide MoS 2 monolayer. We find that besides the dominant intraband contributions, interband current is also indispensable in modulating HHG. The HHG yields increase linearly with the compressive strain since flatter band dispersion and Berry …
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