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 tr...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-ofthe-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 couplinginduced low-lying plasmonic-polaron replica bands in epitaxial semimetallic SrIrO_(3) 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 5 d electron systems, the electron-plasmon interaction should be considered on equal footing with the acknowledged electron–electron interaction and spin–orbit coupling.展开更多
O43 99020715微电子、光电子高技术的发展源于固体能带的基础性研=Development of microelectronics and optoelectronicsfrom basic energy band theory[刊, 中]/王启明(中科院半导体所.北京(100083))∥物理.—1998,27(9).—534—537...O43 99020715微电子、光电子高技术的发展源于固体能带的基础性研=Development of microelectronics and optoelectronicsfrom basic energy band theory[刊, 中]/王启明(中科院半导体所.北京(100083))∥物理.—1998,27(9).—534—537介绍了当今信息高科技领域中半导体微电子、光电子技术的发展现状,阐明其得以发展的物理基础是本世纪初提出的量子力学概念以及随后建立的固体能带论.并探讨了今后进一步发展的前景。参4(李瑞琴)展开更多
基金This work was supported by the National Key R&D Program of the MOST of China(2016YFA0300204)the National Natural Science Foundation of China(11574337,11874199,and 11874263)+2 种基金supported by the National Basic Research Program of China(2015CB654901)Part of this research used Beamline 03U of the Shanghai Synchron Radiation Facility,which is supported by ME2 project(11227902)from the National Natural Science Foundation of Chinasupported by‘‘Award for Outstanding Member in Youth Innovation Promotion Association CAS”。
文摘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-ofthe-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 couplinginduced low-lying plasmonic-polaron replica bands in epitaxial semimetallic SrIrO_(3) 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 5 d electron systems, the electron-plasmon interaction should be considered on equal footing with the acknowledged electron–electron interaction and spin–orbit coupling.
文摘O43 99020715微电子、光电子高技术的发展源于固体能带的基础性研=Development of microelectronics and optoelectronicsfrom basic energy band theory[刊, 中]/王启明(中科院半导体所.北京(100083))∥物理.—1998,27(9).—534—537介绍了当今信息高科技领域中半导体微电子、光电子技术的发展现状,阐明其得以发展的物理基础是本世纪初提出的量子力学概念以及随后建立的固体能带论.并探讨了今后进一步发展的前景。参4(李瑞琴)
