气候变化领域集成服务门户(CCPortal): Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films

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DOI	10.1016/j.scib.2020.10.003
	Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films
	Liu Z.; Liu W.; Zhou R.; Cai S.; Song Y.; Yao Q.; Lu X.; Liu J.; Liu Z.; Wang Z.; Zheng Y.; Wang P.; Liu Z.; Li G.; Shen D.
发表日期	2021
ISSN	20959273
起始页码	433
结束页码	440
卷号	66 期号:5
英文摘要	Electron-boson interaction is fundamental to a thorough understanding of various exotic properties emerging in many-body physics. In photoemission spectroscopy, photoelectron emission due to photon absorption would trigger diverse collective excitations in solids, including the emergence of phonons, magnons, electron-hole pairs, and plasmons, which naturally provides a reliable pathway to study electron-boson couplings. While fingerprints of electron–phonon/-magnon interactions in this state-of-the-art technique have been well investigated, much less is known about electron-plasmon coupling, and direct observation of the band renormalization solely due to electron-plasmon interactions is extremely challenging. Here by utilizing integrated oxide molecular-beam epitaxy and angle-resolved photoemission spectroscopy, we discover the long sought-after pure electron-plasmon coupling-induced low-lying plasmonic-polaron replica bands in epitaxial semimetallic SrIrO3 films, in which the characteristic low carrier concentration and narrow bandwidth combine to provide a unique platform where the electron-plasmon interaction can be investigated kinematically in photoemission spectroscopy. This finding enriches the forms of electron band normalization on collective modes in solids and demonstrates that, to obtain a complete understanding of the quasiparticle dynamics in 5d electron systems, the electron-plasmon interaction should be considered on equal footing with the acknowledged electron–electron interaction and spin–orbit coupling. © 2020 Science China Press
关键词	5d electron systems Electron-plasmon interaction perovskite SrIrO3 Replica bands
英文关键词	Bosons; Carrier concentration; Iridium compounds; Molecular beam epitaxy; Oxide films; Perovskite; Phonons; Photoelectron spectroscopy; Photons; Plasmonics; Polarons; Spin fluctuations; Strontium compounds; 5d electron systems; Angle resolved photoemission spectroscopy; Collective excitations; Direct observations; Electron hole pairs; Electron interaction; Quasiparticle dynamics; State-of-the-art techniques; Electrons
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207508
作者单位	State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai, 200050, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China; Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China; Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China; Department of Physics, Zhejiang University, Hangzhou, 310027, China
推荐引用方式 GB/T 7714	Liu Z.,Liu W.,Zhou R.,et al. Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films[J],2021,66(5).
APA	Liu Z..,Liu W..,Zhou R..,Cai S..,Song Y..,...&Shen D..(2021).Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films.Science Bulletin,66(5).
MLA	Liu Z.,et al."Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films".Science Bulletin 66.5(2021).