Observation of the Charge-Stripe Crystal Phase in an Insulating Cuprate
ORAL
Abstract
High-temperature superconductivity in cuprates arises from carrier doping an antiferromagnetic Mott (AFM) insulator. This carrier doping leads to the formation of electronic liquid crystal phases. The insulating charge-stripe crystal phase is predicted to form when a small density of holes is doped into the charge-transfer insulator state, but this phase is yet to be experimentally observed. We realized the lightly-doped charge transfer insulating state of the cuprate Bi2Sr2CaCu2O8+x by surface annealing. In this insulating state with a charge transfer gap at the order of ~1 eV, we discovered a unidirectional charge-stripe order with a commensurate 4a0 period along the Cu-O-Cu bond. Notably, this insulating charge stripe crystal phase develops before the onset of the pseudogap and the formation of the Fermi surface. Our work provides fresh insight into the microscopic origin of electronic inhomogeneity in high-Tc cuprates.
*We gratefully acknowledge the support from the DARPA Grant NO. N66001-17-1-4051, Army Research Office Grant No. W911NF-17-1-0399 and the NSF Grant No. 1654041.
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Presenters
He Zhao
Boston College
Authors
He Zhao
Boston College
Zheng Ren
Boston College
Bryan Rachmilowitz
Boston College
John A. Schneeloch
Brookhaven National Laboratory
Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
University of Virginia
Ruidan Zhong
Brookhaven National Lab
Department of Chemistry, Princeton University
Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
Brookhaven National Laboratory
Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
Brookhaven National Laboratories
Genda Gu
Brookhaven National Laboratory
Brookhaven National Lab
Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
Cond. Matt. Physics and Material Science, Brookhaven Natl Lab
Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory
Brookhaven National Labs, Long Island, NY, USA, 11973
Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
Condensed Matter Physics, Brookhaven National Laboratory
Brookhaven National Laboratories
Chinese Academy of Sciences
Condensed Matter Physics & Materials Science, Brookhaven National Lab
