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Title: Resonant inelastic x-ray scattering studies of magnons and bimagnons in the lightly doped cuprate La 2 - x Sr x CuO 4

Abstract

Here, we investigated the doping dependence of magnetic excitations in the lightly doped cuprate La2-xSrxCuO4 via combined studies of resonant inelastic x-ray scattering (RIXS) at the Cu L3 edge and theoretical calculations. With increasing doping, the magnon dispersion is found to be essentially unchanged, but the spectral width broadens and the spectral weight varies differently at different momenta. Near the Brillouin zone center, we directly observe bimagnon excitations that possess the same energy scale and doping dependence as previously observed by Raman spectroscopy. They disperse weakly in energy-momentum space, and they are consistent with a bimagnon dispersion that is renormalized by the magnon-magnon interaction at the zone center.

Authors:
 [1];  [2];  [3];  [4];  [2];  [4];  [4];  [2];  [5];  [6];  [4];  [2];  [7];  [4];  [7];  [2]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Univ. Paris-Saclay, Gif-sur-Yvette (France). Leon Brillouin Lab. (LLB), CEA/CNRS
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  3. Paul Scherrer Inst. (PSI), Villigen (Switzerland). SwissFEL and Lab. for Micro and Nanotechnology
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source
  5. Univ. of Perpignan (France). Lab. of Processes, Materials and Solar Energy, Promes-CNRS
  6. Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Physics
  7. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438550
Alternate Identifier(s):
OSTI ID: 1434196
Grant/Contract Number:  
AC02-76SF00515; 290605; 51NF40_141828; CRSII2_160765/1
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 15; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; cuprates; high-temperature superconductors; strongly correlated systems; resonant elastic x-ray scattering

Citation Formats

Chaix, L., Huang, E. W., Gerber, S., Lu, X., Jia, C., Huang, Y., McNally, D. E., Wang, Y., Vernay, F. H., Keren, A., Shi, M., Moritz, B., Shen, Z. -X., Schmitt, T., Devereaux, T. P., and Lee, W. -S. Resonant inelastic x-ray scattering studies of magnons and bimagnons in the lightly doped cuprate La2-xSrxCuO4. United States: N. p., 2018. Web. doi:10.1103/physrevb.97.155144.
Chaix, L., Huang, E. W., Gerber, S., Lu, X., Jia, C., Huang, Y., McNally, D. E., Wang, Y., Vernay, F. H., Keren, A., Shi, M., Moritz, B., Shen, Z. -X., Schmitt, T., Devereaux, T. P., & Lee, W. -S. Resonant inelastic x-ray scattering studies of magnons and bimagnons in the lightly doped cuprate La2-xSrxCuO4. United States. https://doi.org/10.1103/physrevb.97.155144
Chaix, L., Huang, E. W., Gerber, S., Lu, X., Jia, C., Huang, Y., McNally, D. E., Wang, Y., Vernay, F. H., Keren, A., Shi, M., Moritz, B., Shen, Z. -X., Schmitt, T., Devereaux, T. P., and Lee, W. -S. Fri . "Resonant inelastic x-ray scattering studies of magnons and bimagnons in the lightly doped cuprate La2-xSrxCuO4". United States. https://doi.org/10.1103/physrevb.97.155144. https://www.osti.gov/servlets/purl/1438550.
@article{osti_1438550,
title = {Resonant inelastic x-ray scattering studies of magnons and bimagnons in the lightly doped cuprate La2-xSrxCuO4},
author = {Chaix, L. and Huang, E. W. and Gerber, S. and Lu, X. and Jia, C. and Huang, Y. and McNally, D. E. and Wang, Y. and Vernay, F. H. and Keren, A. and Shi, M. and Moritz, B. and Shen, Z. -X. and Schmitt, T. and Devereaux, T. P. and Lee, W. -S.},
abstractNote = {Here, we investigated the doping dependence of magnetic excitations in the lightly doped cuprate La2-xSrxCuO4 via combined studies of resonant inelastic x-ray scattering (RIXS) at the Cu L3 edge and theoretical calculations. With increasing doping, the magnon dispersion is found to be essentially unchanged, but the spectral width broadens and the spectral weight varies differently at different momenta. Near the Brillouin zone center, we directly observe bimagnon excitations that possess the same energy scale and doping dependence as previously observed by Raman spectroscopy. They disperse weakly in energy-momentum space, and they are consistent with a bimagnon dispersion that is renormalized by the magnon-magnon interaction at the zone center.},
doi = {10.1103/physrevb.97.155144},
journal = {Physical Review B},
number = 15,
volume = 97,
place = {United States},
year = {Fri Apr 20 00:00:00 EDT 2018},
month = {Fri Apr 20 00:00:00 EDT 2018}
}

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Works referencing / citing this record:

Quantum spin fluctuations and evolution of electronic structure in cuprates
journal, October 2018


Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2−xCexCuO4
journal, January 2020