Ultrafast dynamics in photo-excited Mott insulator Sr_(3)Ir_(2)O_7 at high pressure

作     者：尹霞 张建波 王东 Takeshi Nakagawa 夏春生 张曹顺 郭伟程 昌峻 丁阳 Xia Yin;Jianbo Zhang;Wang Dong;Takeshi Nakagawa;Chunsheng Xia;Caoshun Zhang;Weicheng Guo;Jun Chang;Yang Ding

作者机构：Center for High-Pressure Science and Technology Advanced ResearchBeijing 100094China College of Physics and Information TechnologyShaanxi Normal UniversityXi'an 710119China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第1期

页      面：149-155页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：The project supported by the National Key Research and Development Program of China(Grant No.2018YFA0305703) Science Challenge Project(Grant No.TZ2016001) the National Natural Science Foundation of China(Grant Nos.U1930401 and 11874075) 

主　　题：ultrafast dynamics high pressure phase transition Mott insulator 

摘      要：High-pressure ultrafast dynamics,as a new crossed research direction,are sensitive to subtle non-equilibrium state changes that might be unresolved by equilibrium states measurements,providing crucial information for studying delicate phase transitions caused by complex interactions in Mott *** time-resolved transient reflectivity measurements,we identified the new phases in the spin–orbit Mott insulator Sr_(3)Ir_(2)O_7 at 300 K that was previously unidentified using conventional approaches such as x-ray *** pressure-dependent variation of the amplitude and lifetime obtained by fitting the reflectivity?R/R reveal the changes of electronic structure caused by lattice distortions,and reflect the critical phenomena of phase *** findings demonstrate the importance of ultrafast nonequilibrium dynamics under extreme conditions for understanding the phase transition of Mott insulators.