Time-resolved photoemission of infinitely periodic atomic arrangements:correlation-dressed excited states of solids

作     者：Youngjae Kim JaeDong Lee 

作者机构：Department of Emerging Materials ScienceDGISTDaegu 42988Korea 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2020年第6卷第1期

页      面：548-557页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：This work was supported by the Basic Science Research Program(2019R1A2C1005050)through the National Research Foundation of Korea(NRF)and also by the DGIST R&D program(20-CoE-NT-01) funded by the Ministry of Science and ICT 

主　　题：resolved infinitely excited 

摘      要：A theory of the time-resolved photoemission spectroscopy(TRPES)is developed,which enables to explore the real-time electron dynamics of infinitely periodic crystalline *** the strongly correlated electron systems NiO and CuO,the early-stage dynamics of the valence band edge are found to be sharply contrasted between those in the spectra of *** provides a new dynamical insight to the Zaanen–Sawatzky–Allen(ZSA)classification scheme of correlated insulators and makes us assert that NiO dynamically behaves like the Mott–Hubbard insulator(MHI)and CuO like the charge transfer insulator(CTI).In the two-dimensional carbon layer graphene,the real-time electron dynamics of quantum-phase-dressed excited states,i.e.,due to the Berry phase and the pseudospin correlation,are investigated in an unprecedented way through the time-resolved angle-resolved photoemission spectroscopy(TR-ARPES).In particular,the dephasing dynamics of optically doped electrons and holes in the massless Dirac band,accompanying a field-induced gliding of the Dirac cone,are discovered.