Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field

doi:10.1103/PhysRevB.97.205406

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	Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field
	Cheng, J. L.; Guo, C.
	2018
发表期刊	Physical Review B
ISSN	2469-9950
卷号	97 期号:20 页码:7
摘要	Graphene exhibits extremely strong optical nonlinearity in a perpendicular magnetic field, the optical conductivities show complicated field dependence at a moderate light intensity, and the perturbation theory fails. The full optical currents induced by a periodic field are nonperturbatively investigated in an equation-of-motion framework based on the Floquet theorem, with the scattering described phenomenologically. The nonlinear responses are understood in terms of the dressed electronic states, or Floquet states, which could be characterized by a weak probe light field. The method is illustrated for a magnetic field at 5 T and a driving field with photon energy 0.05 eV. Our results show that the perturbation theory works for weak fields < 3 kV/cm, confirming the unusual strong light-matter interaction for Landau levels of graphene. Our approach can be easily extended to other systems.
关键词	Materials Science Physics
DOI	10.1103/PhysRevB.97.205406
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60739
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Cheng, J. L.,Guo, C.. Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field[J]. Physical Review B,2018,97(20):7.
APA	Cheng, J. L.,&Guo, C..(2018).Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field.Physical Review B,97(20),7.
MLA	Cheng, J. L.,et al."Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field".Physical Review B 97.20(2018):7.

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