Doping dependence of the magnetic excitations in La2-xSrxCuO4

D. Meyers; H. Miao; A. C. Walters; V. Bisogni; R. S. Springell; M. D'Astuto; M. Dantz; J. Pelliciari; H. Y. Huang; J. Okamoto; D. J. Huang; J. P. Hill; X. He; I. BoŽović; T. Schmitt; M. P.M. Dean

doi:10.1103/PhysRevB.95.075139

Doping dependence of the magnetic excitations in La2-xSrxCuO4

D. Meyers, H. Miao, A. C. Walters, V. Bisogni, R. S. Springell, M. D'Astuto, M. Dantz, J. Pelliciari, H. Y. Huang, J. Okamoto, D. J. Huang, J. P. Hill, X. He, I. BoŽović, T. Schmitt, M. P.M. Dean

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Abstract

The magnetic correlations within the cuprates have undergone intense scrutiny as part of efforts to understand high-temperature superconductivity. We explore the evolution of the magnetic correlations along the nodal direction of the Brillouin zone in La2-xSrxCuO4, spanning the doping phase diagram from the antiferromagnetic Mott insulator at x=0 to the metallic phase at x=0.26. Magnetic excitations along this direction are found to be systematically softened and broadened with doping, at a higher rate than the excitations along the antinodal direction. This phenomenology is discussed in terms of the nature of the magnetism in the doped cuprates. Survival of the high-energy magnetic excitations, even in the overdoped regime, indicates that these excitations are marginal to pairing, while the influence of the low-energy excitations remains ambiguous.

Original language	English
Article number	075139
Journal	Physical Review B
Volume	95
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.95.075139
State	Published - Feb 21 2017
Externally published	Yes

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Early Career Award Program, under Award No. 1047478. 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-SC00112704. J.P. and T.S. acknowledge financial support through the Dysenos AG by Kabelwerke Brugg AG Holding, Fachhochschule Nordwestschweiz, and the Paul Scherrer Institut. M.D. and T.S. acknowledge funding from the Swiss National Science Foundation within the D-A-CH programme (SNSF Research Grant No. 200021L 141325). The MBE synthesis (I.B. and H.X.) was supported by the U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division. Experiments were performed at the ADRESS beamline of the Swiss Light Source at the Paul Scherrer Institut, Switzerland, and at BL05A1-the Inelastic Scattering beamline at the National Synchrotron Radiation Research Center, Taiwan. Part of this research has been funded by the Swiss National Science Foundation through the D-A-CH program (SNSF Research Grant No. 200021L 141325).

Funders	Funder number
Dysenos AG
Kabelwerke Brugg AG Holding
U.S. Department of Energy
Office of Science	DE-SC00112704
Basic Energy Sciences	1047478
Division of Materials Sciences and Engineering
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	200021L 141325
Haute école Spécialisée de Suisse Occidentale

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10.1103/PhysRevB.95.075139

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Meyers, D., Miao, H., Walters, A. C., Bisogni, V., Springell, R. S., D'Astuto, M., Dantz, M., Pelliciari, J., Huang, H. Y., Okamoto, J., Huang, D. J., Hill, J. P., He, X., BoŽović, I., Schmitt, T., & Dean, M. P. M. (2017). Doping dependence of the magnetic excitations in La2-xSrxCuO4. Physical Review B, 95(7), Article 075139. https://doi.org/10.1103/PhysRevB.95.075139

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title = "Doping dependence of the magnetic excitations in La2-xSrxCuO4",

abstract = "The magnetic correlations within the cuprates have undergone intense scrutiny as part of efforts to understand high-temperature superconductivity. We explore the evolution of the magnetic correlations along the nodal direction of the Brillouin zone in La2-xSrxCuO4, spanning the doping phase diagram from the antiferromagnetic Mott insulator at x=0 to the metallic phase at x=0.26. Magnetic excitations along this direction are found to be systematically softened and broadened with doping, at a higher rate than the excitations along the antinodal direction. This phenomenology is discussed in terms of the nature of the magnetism in the doped cuprates. Survival of the high-energy magnetic excitations, even in the overdoped regime, indicates that these excitations are marginal to pairing, while the influence of the low-energy excitations remains ambiguous.",

author = "D. Meyers and H. Miao and Walters, {A. C.} and V. Bisogni and Springell, {R. S.} and M. D'Astuto and M. Dantz and J. Pelliciari and Huang, {H. Y.} and J. Okamoto and Huang, {D. J.} and Hill, {J. P.} and X. He and I. Bo{\v Z}ovi{\'c} and T. Schmitt and Dean, {M. P.M.}",

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AU - Miao, H.

AU - Walters, A. C.

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AU - Springell, R. S.

AU - D'Astuto, M.

AU - Dantz, M.

AU - Pelliciari, J.

AU - Huang, H. Y.

AU - Okamoto, J.

AU - Huang, D. J.

AU - Hill, J. P.

AU - He, X.

AU - BoŽović, I.

AU - Schmitt, T.

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AB - The magnetic correlations within the cuprates have undergone intense scrutiny as part of efforts to understand high-temperature superconductivity. We explore the evolution of the magnetic correlations along the nodal direction of the Brillouin zone in La2-xSrxCuO4, spanning the doping phase diagram from the antiferromagnetic Mott insulator at x=0 to the metallic phase at x=0.26. Magnetic excitations along this direction are found to be systematically softened and broadened with doping, at a higher rate than the excitations along the antinodal direction. This phenomenology is discussed in terms of the nature of the magnetism in the doped cuprates. Survival of the high-energy magnetic excitations, even in the overdoped regime, indicates that these excitations are marginal to pairing, while the influence of the low-energy excitations remains ambiguous.

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Doping dependence of the magnetic excitations in La2-xSrxCuO4

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