Strongly Correlated Charge Density Wave in La2-xSrxCuO4 Evidenced by Doping-Dependent Phonon Anomaly

J. Q. Lin; H. Miao; D. G. Mazzone; G. D. Gu; A. Nag; A. C. Walters; M. Garciá-Fernández; A. Barbour; J. Pelliciari; I. Jarrige; M. Oda; K. Kurosawa; N. Momono; Ke Jin Zhou; V. Bisogni; X. Liu; M. P.M. Dean

doi:10.1103/PhysRevLett.124.207005

Strongly Correlated Charge Density Wave in La2-xSrxCuO4 Evidenced by Doping-Dependent Phonon Anomaly

J. Q. Lin, H. Miao, D. G. Mazzone, G. D. Gu, A. Nag, A. C. Walters, M. Garciá-Fernández, A. Barbour, J. Pelliciari, I. Jarrige, M. Oda, K. Kurosawa, N. Momono, Ke Jin Zhou, V. Bisogni, X. Liu, M. P.M. Dean

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Abstract

The discovery of charge-density-wave-related effects in the resonant inelastic X-ray scattering spectra of cuprates holds the tantalizing promise of clarifying the interactions that stabilize the electronic order. Here, we report a comprehensive resonant inelastic X-ray scattering study of La2-xSrxCuO4 finding that charge-density wave effects persist up to a remarkably high doping level of x=0.21 before disappearing at x=0.25. The inelastic excitation spectra remain essentially unchanged with doping despite crossing a topological transition in the Fermi surface. This indicates that the spectra contain little or no direct coupling to electronic excitations near the Fermi surface, rather they are dominated by the resonant cross section for phonons and charge-density-wave-induced phonon softening. We interpret our results in terms of a charge-density wave that is generated by strong correlations and a phonon response that is driven by the charge-density-wave-induced modification of the lattice.

Original language	English
Article number	207005
Journal	Physical Review Letters
Volume	124
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.124.207005
State	Published - May 22 2020
Externally published	Yes

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Basic Energy Sciences. Work at Brookhaven National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-SC0012704. X-ray research by M. P. M. D., D. G. M. and H. M. was supported by Field Work Proposal No. 23357. Data interpretation by X. L. at ShanghaiTech University, and J. Q. L.’s training as a graduate student were supported by the ShanghaiTech University startup fund, MOST of China under Grant No. 2016YFA0401000, NSFC under Grant No. 11934017 and the Chinese Academy of Sciences under Grant No. 112111KYSB20170059. The research by V. B. was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Early Career Award Program. This research used resources at the Soft Inelastic X-Ray beamline of the National Synchrotron Light Source II, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. We acknowledge Diamond Light Source for time on Beamline I21 under Proposal 22261.

Funders	Funder number
U.S. Department of Energy
Office of Science	DE-SC0012704, 23357
Basic Energy Sciences
Brookhaven National Laboratory
National Natural Science Foundation of China	11934017
Chinese Academy of Sciences	112111KYSB20170059
Ministry of Science and Technology of the People's Republic of China	2016YFA0401000
ShanghaiTech University

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Lin, J. Q., Miao, H., Mazzone, D. G., Gu, G. D., Nag, A., Walters, A. C., Garciá-Fernández, M., Barbour, A., Pelliciari, J., Jarrige, I., Oda, M., Kurosawa, K., Momono, N., Zhou, K. J., Bisogni, V., Liu, X., & Dean, M. P. M. (2020). Strongly Correlated Charge Density Wave in La2-xSrxCuO4 Evidenced by Doping-Dependent Phonon Anomaly. Physical Review Letters, 124(20), Article 207005. https://doi.org/10.1103/PhysRevLett.124.207005

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title = "Strongly Correlated Charge Density Wave in La2-xSrxCuO4 Evidenced by Doping-Dependent Phonon Anomaly",

abstract = "The discovery of charge-density-wave-related effects in the resonant inelastic X-ray scattering spectra of cuprates holds the tantalizing promise of clarifying the interactions that stabilize the electronic order. Here, we report a comprehensive resonant inelastic X-ray scattering study of La2-xSrxCuO4 finding that charge-density wave effects persist up to a remarkably high doping level of x=0.21 before disappearing at x=0.25. The inelastic excitation spectra remain essentially unchanged with doping despite crossing a topological transition in the Fermi surface. This indicates that the spectra contain little or no direct coupling to electronic excitations near the Fermi surface, rather they are dominated by the resonant cross section for phonons and charge-density-wave-induced phonon softening. We interpret our results in terms of a charge-density wave that is generated by strong correlations and a phonon response that is driven by the charge-density-wave-induced modification of the lattice.",

author = "Lin, {J. Q.} and H. Miao and Mazzone, {D. G.} and Gu, {G. D.} and A. Nag and Walters, {A. C.} and M. Garci{\'a}-Fern{\'a}ndez and A. Barbour and J. Pelliciari and I. Jarrige and M. Oda and K. Kurosawa and N. Momono and Zhou, {Ke Jin} and V. Bisogni and X. Liu and Dean, {M. P.M.}",

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year = "2020",

month = may,

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doi = "10.1103/PhysRevLett.124.207005",

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Lin, JQ, Miao, H, Mazzone, DG, Gu, GD, Nag, A, Walters, AC, Garciá-Fernández, M, Barbour, A, Pelliciari, J, Jarrige, I, Oda, M, Kurosawa, K, Momono, N, Zhou, KJ, Bisogni, V, Liu, X & Dean, MPM 2020, 'Strongly Correlated Charge Density Wave in La2-xSrxCuO4 Evidenced by Doping-Dependent Phonon Anomaly', Physical Review Letters, vol. 124, no. 20, 207005. https://doi.org/10.1103/PhysRevLett.124.207005

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AU - Lin, J. Q.

AU - Miao, H.

AU - Mazzone, D. G.

AU - Gu, G. D.

AU - Nag, A.

AU - Walters, A. C.

AU - Garciá-Fernández, M.

AU - Barbour, A.

AU - Pelliciari, J.

AU - Jarrige, I.

AU - Oda, M.

AU - Kurosawa, K.

AU - Momono, N.

AU - Zhou, Ke Jin

AU - Bisogni, V.

AU - Liu, X.

AU - Dean, M. P.M.

PY - 2020/5/22

Y1 - 2020/5/22

N2 - The discovery of charge-density-wave-related effects in the resonant inelastic X-ray scattering spectra of cuprates holds the tantalizing promise of clarifying the interactions that stabilize the electronic order. Here, we report a comprehensive resonant inelastic X-ray scattering study of La2-xSrxCuO4 finding that charge-density wave effects persist up to a remarkably high doping level of x=0.21 before disappearing at x=0.25. The inelastic excitation spectra remain essentially unchanged with doping despite crossing a topological transition in the Fermi surface. This indicates that the spectra contain little or no direct coupling to electronic excitations near the Fermi surface, rather they are dominated by the resonant cross section for phonons and charge-density-wave-induced phonon softening. We interpret our results in terms of a charge-density wave that is generated by strong correlations and a phonon response that is driven by the charge-density-wave-induced modification of the lattice.

AB - The discovery of charge-density-wave-related effects in the resonant inelastic X-ray scattering spectra of cuprates holds the tantalizing promise of clarifying the interactions that stabilize the electronic order. Here, we report a comprehensive resonant inelastic X-ray scattering study of La2-xSrxCuO4 finding that charge-density wave effects persist up to a remarkably high doping level of x=0.21 before disappearing at x=0.25. The inelastic excitation spectra remain essentially unchanged with doping despite crossing a topological transition in the Fermi surface. This indicates that the spectra contain little or no direct coupling to electronic excitations near the Fermi surface, rather they are dominated by the resonant cross section for phonons and charge-density-wave-induced phonon softening. We interpret our results in terms of a charge-density wave that is generated by strong correlations and a phonon response that is driven by the charge-density-wave-induced modification of the lattice.

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ER -

Strongly Correlated Charge Density Wave in La2-xSrxCuO4 Evidenced by Doping-Dependent Phonon Anomaly

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