title: Charge order driven by Fermi-arc instability in Bi2Sr(2-x)La(x)CuO(6+δ).
abstract: The understanding of the origin of superconductivity in cuprates has been hindered by the apparent diversity of intertwining electronic orders in these materials. We combined resonant x-ray scattering (REXS), scanning-tunneling microscopy (STM), and angle-resolved photoemission spectroscopy (ARPES) to observe a charge order that appears consistently in surface and bulk, and in momentum and real space within one cuprate family, Bi2Sr(2-x)La(x)CuO(6+δ). The observed wave vectors rule out simple antinodal nesting in the single-particle limit but match well with a phenomenological model of a many-body instability of the Fermi arcs. Combined with earlier observations of electronic order in other cuprate families, these findings suggest the existence of a generic charge-ordered state in underdoped cuprates and uncover its intimate connection to the pseudogap regime.
authors.affiliation: Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
authors.forename: R
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authors.lastname: Comin
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authors.initials: MM
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authors.lastname: Eisaki
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authors.lastname: Schierle
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authors.initials: E
authors.lastname: Weschke
authors.forename: R
authors.initials: R
authors.lastname: Sutarto
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authors.initials: F
authors.lastname: He
authors.forename: A
authors.initials: A
authors.lastname: Soumyanarayanan
authors.forename: Yang
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authors.lastname: He
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authors.lastname: Le Tacon
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authors.lastname: Elfimov
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authors.lastname: Sawatzky
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authors.lastname: Keimer
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authors.lastname: Damascelli