首页|Ultrafast dynamics in photo-excited Mott insulator Sr3Ir2O7 at high pressure

Ultrafast dynamics in photo-excited Mott insulator Sr3Ir2O7 at high pressure

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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 insulators.With time-resolved transient reflectivity measurements,we identified the new phases in the spin-orbit Mott insulator Sr3Ir2O7 at 300 K that was previously unidentified using conventional approaches such as x-ray diffraction.Significant 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 transitions.Our findings demonstrate the importance of ultrafast nonequilibrium dynamics under extreme conditions for understanding the phase transition of Mott insulators.

ultrafast dynamicshigh pressurephase transitionMott insulator

尹霞、张建波、王东、Takeshi Nakagawa、夏春生、张曹顺、郭伟程、昌峻、丁阳

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Center for High-Pressure Science and Technology Advanced Research,Beijing 100094,China

College of Physics and Information Technology,Shaanxi Normal University,Xi'an 710119,China

National Key Research and Development Program of ChinaScience Challenge ProjectNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2018YFA0305703TZ2016001U193040111874075

2024

10.1088/1674-1056/acdc8c

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(1)
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