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Title: Charge-stripe crystal phase in an insulating cuprate

Journal Article · · Nature Materials

High-temperature (high-Tc) superconductivity in cuprates arises from carrier doping of an antiferromagnetic Mott 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 observed experimentally. Here, we use surface annealing to extend the accessible doping range in Bi-based cuprates and realize the lightly doped charge-transfer insulating state of the cuprate Bi2Sr2CaCu2O8+x. In this insulating state with a charge transfer gap on the order of ~1 eV, our spectroscopic imaging scanning tunnelling microscopy measurements provide strong evidence for 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 formation of the Fermi surface. Furthermore, our work provides fresh insight into the microscopic origin of electronic inhomogeneity in high-Tc cuprates.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1495006
Report Number(s):
BNL-211270-2019-JAAM
Journal Information:
Nature Materials, Vol. 18, Issue 2; ISSN 1476-1122
Publisher:
Springer Nature - Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (3)

Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator journal October 2019
Charge ordering in high-temperature superconductors visualized by scanning tunneling microscopy journal October 2019
Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator text January 2019

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