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Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2-xCexCuO4 | |
2020-01-17 | |
发表期刊 | NPJ QUANTUM MATERIALS |
ISSN | 2397-4648 |
EISSN | 2397-4648 |
卷号 | 5期号:1 |
发表状态 | 已发表 |
DOI | 10.1038/s41535-019-0205-9 |
摘要 | Electron correlations play a dominant role in the charge dynamics of the cuprates. We use resonant inelastic X-ray scattering (RIXS) to track the doping dependence of the collective charge excitations in electron doped La2-xCexCuO4 (LCCO). From the resonant energy dependence and the out-of-plane momentum dependence, the charge excitations are identified as three-dimensional (3D) plasmons, which reflect the nature of the electronic structure and Coulomb repulsion on both short and long lengthscales. With increasing electron doping, the plasmon excitations increase monotonically in energy, a consequence of the electron correlation effect on electron structure near the Fermi surface (FS). Importantly, the plasmon excitations evolve from a broad feature into a well-defined peak with much increased life time, revealing the evolution of the electrons from incoherent states to coherent quasiparticles near the FS. Such evolution marks the reduction of the short-range electronic correlation, and thus the softening of the Mottness of the system with increasing electron doping. |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | Swiss Light Source at the Paul Scherrer Institut[20151449] |
WOS研究方向 | Materials Science ; Physics |
WOS类目 | Materials Science, Multidisciplinary ; Quantum Science & Technology ; Physics, Applied ; Physics, Condensed Matter |
WOS记录号 | WOS:000511425400002 |
出版者 | NATURE PUBLISHING GROUP |
WOS关键词 | ENERGY-LOSS SPECTROSCOPY ; COLLECTIVE EXCITATIONS ; PLASMONS ; ELECTRODYNAMICS ; FLUCTUATIONS ; SCATTERING |
原始文献类型 | Article |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/105354 |
专题 | 物质科学与技术学院_PI研究组_李刚组 大科学中心_PI研究组_柳学榕组 |
通讯作者 | Yin, Zhiping; Dean, Mark P. M.; Liu, Xuerong |
作者单位 | 1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China 6.Beijing Normal Univ, Ctr Adv Quantum Studies, Beijing 100875, Peoples R China 7.Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England 8.Paul Scherrer Inst, Swiss Light Source, Photon Sci Div, CH-5232 Villigen, Switzerland 9.Zhengzhou Univ, Sch Phys Engn, Zhengzhou 450001, Peoples R China 10.Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA |
第一作者单位 | 物质科学与技术学院 |
通讯作者单位 | 物质科学与技术学院 |
第一作者的第一单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Lin, Jiaqi,Yuan, Jie,Jin, Kui,et al. Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2-xCexCuO4[J]. NPJ QUANTUM MATERIALS,2020,5(1). |
APA | Lin, Jiaqi.,Yuan, Jie.,Jin, Kui.,Yin, Zhiping.,Li, Gang.,...&Liu, Xuerong.(2020).Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2-xCexCuO4.NPJ QUANTUM MATERIALS,5(1). |
MLA | Lin, Jiaqi,et al."Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2-xCexCuO4".NPJ QUANTUM MATERIALS 5.1(2020). |
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