globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.10.003
论文题名:
Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films
作者: 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.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:5
起始页码: 433
结束页码: 440
语种: 英语
中文关键词: 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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170342
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Liu Z.,Liu W.,Zhou R.,et al. Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO3 films[J]. Science Bulletin,2021-01-01,66(5)
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