Dynamic electron correlations with charge order wavelength along all directions in the copper oxide plane

F. Boschini, M. Minola, R. Sutarto, E. Schierle, M. Bluschke, S. Das, Y. Yang, M. Michiardi, Y. C. Shao, X. Feng, S. Ono, R. D. Zhong, J. A. Schneeloch, G. D. Gu, E. Weschke, F. He, Y. D. Chuang, B. Keimer, A. Damascelli, A. Frano and E. H. da Silva Neto ()
Additional contact information
F. Boschini: Quantum Matter Institute, University of British Columbia
M. Minola: Max Planck Institute for Solid State Research
R. Sutarto: Canadian Light Source
E. Schierle: Helmholtz-Zentrum Berlin für Materialien und Energie, BESSY II
M. Bluschke: Max Planck Institute for Solid State Research
S. Das: University of California San Diego
Y. Yang: University of California San Diego
M. Michiardi: Quantum Matter Institute, University of British Columbia
Y. C. Shao: Lawrence Berkeley National Laboratory
X. Feng: Lawrence Berkeley National Laboratory
S. Ono: Central Research Institute of Electric Power Industry
R. D. Zhong: Brookhaven National Laboratory
J. A. Schneeloch: Brookhaven National Laboratory
G. D. Gu: Brookhaven National Laboratory
E. Weschke: Helmholtz-Zentrum Berlin für Materialien und Energie, BESSY II
F. He: Canadian Light Source
Y. D. Chuang: Lawrence Berkeley National Laboratory
B. Keimer: Max Planck Institute for Solid State Research
A. Damascelli: Quantum Matter Institute, University of British Columbia
A. Frano: University of California San Diego
E. H. da Silva Neto: University of California

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract In strongly correlated systems the strength of Coulomb interactions between electrons, relative to their kinetic energy, plays a central role in determining their emergent quantum mechanical phases. We perform resonant x-ray scattering on Bi2Sr2CaCu2O8+δ, a prototypical cuprate superconductor, to probe electronic correlations within the CuO2 plane. We discover a dynamic quasi-circular pattern in the x-y scattering plane with a radius that matches the wave vector magnitude of the well-known static charge order. Along with doping- and temperature-dependent measurements, our experiments reveal a picture of charge order competing with superconductivity where short-range domains along x and y can dynamically rotate into any other in-plane direction. This quasi-circular spectrum, a hallmark of Brazovskii-type fluctuations, has immediate consequences to our understanding of rotational and translational symmetry breaking in the cuprates. We discuss how the combination of short- and long-range Coulomb interactions results in an effective non-monotonic potential that may determine the quasi-circular pattern.

Date: 2021
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DOI: 10.1038/s41467-020-20824-7

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