# Impact of electron correlations on two-particle charge response in electron- and hole-doped cuprates https://mdr.nims.go.jp/datasets/299ef475-f289-4d72-a253-3650086297b9 ## File - [PhysRevResearch.6.043184.pdf](https://mdr.nims.go.jp/filesets/89d7ecde-36dd-4a3c-8599-1b76773c45f0/download) ([Detail](https://mdr.nims.go.jp/filesets/89d7ecde-36dd-4a3c-8599-1b76773c45f0.md)) ## Id 299ef475-f289-4d72-a253-3650086297b9 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2024-11-26T20:56:29.401443Z ## Updated at 2024-12-05T03:46:38.967986Z ## Published at 2024-12-05T03:47:13.715186Z ## Doi ## First published url https://doi.org/10.1103/physrevresearch.6.043184 ## Date published 2024-11-21 ## Recorded date published 2024-11 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Impact of electron correlations on two-particle charge response in electron- and hole-doped cuprates title_type: original lang: en ## Description - description: Estimating many-body effects that deviate from an independent particle approach has long been a key research interest in condensed matter physics. Layered cuprates are prototypical systems, where electron-electron interactions are found to strongly affect the dynamics of single-particle excitations. It is, however, still unclear how the electron correlations influence charge excitations, such as plasmons, which have been variously treated with either weak or strong correlation models. In this work, we demonstrate the hybridized nature of collective valence charge fluctuations leading to dispersing acoustic-like plasmons in hole-doped La1.84Sr0.16CuO4 and electron-doped La1.84Ce0.16CuO4 using the two-particle probe, resonant inelastic x-ray scattering. We then describe the plasmon dispersions in both systems, within both the weak-coupling mean-field random phase approximation (RPA) and strong-coupling t-J-V model in a large-N scheme. The t-J-V model, which includes the correlation effects implicitly, accurately describes the plasmon dispersions as resonant excitations outside the single-particle intraband continuum. In comparison, a quantitative description of the plasmon dispersion in the RPA approach is obtained only upon explicit consideration of renormalized electronic band parameters. Our comparative analysis shows that electron correlations significantly impact the low-energy plasmon excita- tions across the cuprate doping phase diagram, even at long wavelengths. Thus, complementary information on the evolution of electron correlations, influenced by the rich electronic phases in condensed matter systems, can be extracted through the study of two-particle charge response. description_type: abstract lang: und ## Creator - name: Abhishek Nag role: author orcid: https://orcid.org/0000-0002-1394-5105 - name: Luciano Zinni role: author orcid: https://orcid.org/0000-0002-9165-9251 - name: Jaewon Choi role: author - name: J. Li role: author - name: Sijia Tu role: author orcid: https://orcid.org/0009-0003-6260-6534 - name: A. C. Walters role: author orcid: https://orcid.org/0000-0001-9822-3859 - name: S. Agrestini role: author - name: S. M. Hayden role: author orcid: https://orcid.org/0000-0002-3209-027X - name: Matías Bejas role: author orcid: https://orcid.org/0000-0003-4254-0622 - name: Zefeng Lin role: author - name: H. Yamase role: author orcid: https://orcid.org/0000-0003-0328-5657 - name: Kui Jin role: author orcid: https://orcid.org/0000-0003-2208-8501 - name: M. García-Fernández role: author orcid: https://orcid.org/0000-0002-6982-9066 - name: J. Fink role: author orcid: https://orcid.org/0000-0002-5286-1684 - name: Andrés Greco role: author orcid: https://orcid.org/0000-0001-5958-5080 - name: Ke-Jin Zhou role: author ## Contact agent ## Publisher organization: American Physical Society (APS) ## Managing organization ## Keyword - subject: RIXS schema: not_defined - subject: cuprare schema: not_defined - subject: superconductor schema: not_defined - subject: electron correlations schema: not_defined - subject: plasmon schema: not_defined - subject: resonant inelastic x-ray scattering schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ ## Other identifier(s) ## Data origin ## Embargo ## Journal - title: Physical Review Research issn: '26431564' volume: '6' issue: '4' article_number: '043184' ## Conference ## Related item ## Funding - identifier: MM27872 funder_name: Diamond Light Source - funder_name: National Research Foundation of Korea - identifier: RS-2023-00252768 funder_name: Ministry of Science and ICT, South Korea - identifier: '884104' funder_name: H2020 Marie Skłodowska-Curie Actions - identifier: JP20H01856 funder_name: Japan Society for the Promotion of Science - funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: '12225412' funder_name: National Natural Science Foundation of China - identifier: 2022YSBR-048 funder_name: Chinese Academy of Sciences ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 89d7ecde-36dd-4a3c-8599-1b76773c45f0 filename: PhysRevResearch.6.043184.pdf content_type: application/pdf size: 1369832 md5: edcc7dab59bdee18e7bb543f222c9257 ## Thumbnail fileset_id: 89d7ecde-36dd-4a3c-8599-1b76773c45f0 filename: PhysRevResearch.6.043184.pdf