Role of the interlayer interactions in ultrafast terahertz thermal dynamics of bilayer graphene

作     者：Tingyuan Jia Shaoming Xie Zeyu Zhang Qinxue Yin Chunwei Wang Chenjing Quan Xiao Xing Juan Du Yuxin Leng 贾婷媛;谢少明;张泽宇;殷沁雪;汪春韡;权晨菁;邢晓;杜鹃;冷雨欣

作者机构：State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser ScienceShanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China School of Physics and ElectronicsShandong Normal UniversityJinan 250014China School of Physical Science and TechnologyShanghaiTech UniversityShanghai 201210China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2022年第20卷第9期

页      面：79-83页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.92050203,61905264,61875211,61925507,62005296,and 62105347) National Key R&D Program of China(No.2017YFE0123700) CAS Interdisciplinary Innovation Team 

主　　题：terahertz ultrafast spectroscopy bilayer graphene 

摘      要：Bilayer graphene,which is highly promising for electronic and optoelectronic applications because of its strong coupling of the Dirac–Fermions,has been studied extensively for the emergent correlated phenomena with magic-angle *** to the low energy linear type band gap dispersion relationship,graphene has drawn an amount of optoelectronic devices applications in the terahertz ***,the strong interlayer interactions modulated electron-electron and electron-phonon coupling,and their dynamics in bilayer graphene have been rarely studied by terahertz *** this study,the interlayer interaction influence on the electron-electron and the electron-phonon coupling has been assigned with the interaction between the two graphene *** the ultrafast cooling process in bilayer graphene,the interlayer interaction could boost the electron-phonon coupling process and oppositely reduce the electron-electron coupling process,which led to the less efficient thermalization ***,the electron-electron coupling process is shown to be related with the electron momentum scattering time,which increased vividly in bilayer *** work could provide new insights into the ultrafast dynamics in bilayer graphene,which is of crucial importance for designing multi-layer graphene-based optoelectronic devices.