Evolution of the Magnetic Excitations in Electron-Doped La2-1Ce1CuO4

被引：1

作者：

Li, X. T. ^{[1
]}

Tu, S. J. ^{[2
,3
]}

Chaix, L. ^{[4
]}

Fawaz, C. ^{[4
]}

d'Astuto, M. ^{[4
]}

Li, X. ^{[1
]}

Yakhou-Harris, F. ^{[5
]}

Kummer, K. ^{[5
]}

Brookes, N. B. ^{[5
]}

Garcia-Fernandez, M. ^{[6
]}

Zhou, Ke-Jin ^{[6
]}

Lin, Z. F. ^{[2
,3
]}

Yuan, J. ^{[2
,3
]}

Jin, K. ^{[2
,3
]}

Dean, M. P. M. ^{[7
]}

Liu, X. ^{[1
,8
]}

机构：

[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 Grenoble Alpes, Inst Neel, CNRS, Grenoble INP, F-38000 Grenoble, France

[5] European Synchrotron Radiat Facil ESRF, BP 220, F-38043 Grenoble, France

[6] Diamond Light Source, Harwell Campus, Didcot OX11 0DE, Oxon, England

[7] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[8] ShanghaiTech Univ, Ctr Transformat Sci, Shanghai 201210, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 05期

关键词：

X-RAY-SCATTERING; CHARGE EXCITATIONS; DISPERSION; BEAMLINE;

D O I：

10.1103/PhysRevLett.132.056002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigated the high energy spin excitations in electron -doped La2-xCexCuO4, a cuprate superconductor, by resonant inelastic x-ray scattering (RIXS) measurements. Efforts were paid to disentangle the paramagnon signal from non -spin -flip spectral weight mixing in the RIXS spectrum at Q11 = (0.6 pi, 0) and (0.9 pi, 0) along the (1 0) direction. Our results show that, for doping level x from 0.07 to 0.185, the variation of the paramagnon excitation energy is marginal. We discuss the implication of our results in connection with the evolution of the electron correlation strength in this system.

引用

页数：7

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