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Persistent spin excitations in doped antiferromagnets revealed by resonant inelastic light scattering

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  • C. J. Jia

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University
    Stanford University)

  • E. A. Nowadnick

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University
    Stanford University)

  • K. Wohlfeld

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University)

  • Y. F. Kung

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University
    Stanford University)

  • C.-C. Chen

    (Advanced Photon Source, Argonne National Laboratory)

  • S. Johnston

    (University of British Columbia
    Quantum Matter Institute, University of British Columbia)

  • T. Tohyama

    (Yukawa Institute for Theoretical Physics, Kyoto University)

  • B. Moritz

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University
    University of North Dakota)

  • T. P. Devereaux

    (Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University)

Abstract

How coherent quasiparticles emerge by doping quantum antiferromagnets is a key question in correlated electron systems, whose resolution is needed to elucidate the phase diagram of copper oxides. Recent resonant inelastic X-ray scattering (RIXS) experiments in hole-doped cuprates have purported to measure high-energy collective spin excitations that persist well into the overdoped regime and bear a striking resemblance to those found in the parent compound, challenging the perception that spin excitations should weaken with doping and have a diminishing effect on superconductivity. Here we show that RIXS at the Cu L3-edge indeed provides access to the spin dynamical structure factor once one considers the full influence of light polarization. Further we demonstrate that high-energy spin excitations do not correlate with the doping dependence of Tc, while low-energy excitations depend sensitively on doping and show ferromagnetic correlations. This suggests that high-energy spin excitations are marginal to pairing in cuprate superconductors.

Suggested Citation

  • C. J. Jia & E. A. Nowadnick & K. Wohlfeld & Y. F. Kung & C.-C. Chen & S. Johnston & T. Tohyama & B. Moritz & T. P. Devereaux, 2014. "Persistent spin excitations in doped antiferromagnets revealed by resonant inelastic light scattering," Nature Communications, Nature, vol. 5(1), pages 1-7, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4314
    DOI: 10.1038/ncomms4314
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    Cited by:

    1. A. Singh & H. Y. Huang & J. D. Xie & J. Okamoto & C. T. Chen & T. Watanabe & A. Fujimori & M. Imada & D. J. Huang, 2022. "Unconventional exciton evolution from the pseudogap to superconducting phases in cuprates," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Lichen Wang & Guanhong He & Zichen Yang & Mirian Garcia-Fernandez & Abhishek Nag & Kejin Zhou & Matteo Minola & Matthieu Le Tacon & Bernhard Keimer & Yingying Peng & Yuan Li, 2022. "Paramagnons and high-temperature superconductivity in a model family of cuprates," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Jordyn Hales & Utkarsh Bajpai & Tongtong Liu & Denitsa R. Baykusheva & Mingda Li & Matteo Mitrano & Yao Wang, 2023. "Witnessing light-driven entanglement using time-resolved resonant inelastic X-ray scattering," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    4. Peizhi Mai & Nathan S. Nichols & Seher Karakuzu & Feng Bao & Adrian Del Maestro & Thomas A. Maier & Steven Johnston, 2023. "Robust charge-density-wave correlations in the electron-doped single-band Hubbard model," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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