典型文献
High-order harmonic generations in tilted Weyl semimetals
文献摘要：
We investigate high-order harmonic generations(HHGs)under comparison of Weyl cones in two types.Due to the hyperboloidal electron pocket structure,strong noncentrosymmetrical generations in high orders are observed around a single type-Ⅱ Weyl point,especially at zero frequency.Such a remarkable DC signal is proved to have attributions from the intraband transition after spectral decomposition.Under weak pulse electric field,the linear optical response of a non-tilted Weyl cone is consistent with the Kubo theory.With extensive numerical simulations,we conclude that the non-zero chemical potential can enhance the even-order generations,from the slightly tilted system to the over-tilted systems.In consideration of dynamical symmetries,type-Ⅰ and type-Ⅱ Weyl cones also show different selective responses under the circularly polarized light.Finally,using a more realistic model containing two pairs of Weyl points,we demonstrate that paired Weyl points with opposite chirality can suppress the overall even-order generations.
文献关键词：
中图分类号：
作者姓名：
Zi-Yuan Li;Qi Li;Zhou Li
作者机构：
GBA Branch of Aerospace Information Research Institute,Chinese Academy of Sciences,Guangzhou 510700,China
文献出处：
引用格式：
[1]Zi-Yuan Li;Qi Li;Zhou Li-.High-order harmonic generations in tilted Weyl semimetals)[J].中国物理B（英文版）,2022(12):410-419
A类：
HHGs,hyperboloidal,noncentrosymmetrical
B类：
High,harmonic,generations,tilted,Weyl,semimetals,investigate,high,under,comparison,cones,two,types,Due,electron,pocket,structure,strong,orders,are,observed,around,single,especially,zero,frequency,Such,remarkable,DC,signal,proved,have,attributions,from,intraband,transition,after,spectral,decomposition,Under,weak,pulse,electric,field,linear,optical,consistent,Kubo,theory,With,extensive,numerical,simulations,conclude,that,chemical,potential,can,enhance,even,slightly,systems,In,consideration,dynamical,symmetries,also,show,different,selective,responses,circularly,polarized,Finally,using,more,realistic,model,containing,pairs,points,demonstrate,paired,opposite,chirality,suppress,overall
AB值：
0.587319
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