Unconventional Electronic Structure Evolution with Hole Doping inBi2Sr2CaCu2O8+δ: Angle-Resolved Photoemission Results

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Correlated Electrons in High Temperature Superconductors

Elbio Dagotto (1993)

Theoretical ideas and experimental results concerning high temperature superconductors are reviewed. Special emphasis is given to calculations carried out with the help of computers applied to models of strongly correlated electrons proposed to describe the two dimensional

${\rm Cu O_2}$ planes. The review also includes results using several analytical techniques. The one and three band Hubbard models, and the

${\rm t-J}$ model are discussed, and their behavior compared against experiments when available. Among the conclusions of the review, we found that some experimentally observed unusual properties of the cuprates have a natural explanation through Hubbard-like models. In particular abnormal features like the mid-infrared band of the optical conductivity

$\sigma(\omega)$ , the new states observed in the gap in photoemission experiments, the behavior of the spin correlations with doping, and the presence of phase separation in the copper oxide superconductors may be explained, at least in part, by these models. Finally, the existence of superconductivity in Hubbard-like models is analyzed. Some aspects of the recently proposed ideas to describe the cuprates as having a

$\dx2y2$ superconducting condensate at low temperatures are discussed. Numerical results favor this scenario over others....(continues).

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Anomalously large gap anisotropy in thea-bplane ofBi2Sr2CaCu2O8+δ

Z.-X. Shen, D. Dessau, B. Wells … (1993)

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Superexchange mechanism andd-wave superconductivity

Gabriel Kotliar, Jialin Liu (1988)

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Journal

Journal ID (publisher-id): PRLTAO

Title: Physical Review Letters

Abbreviated Title: Phys. Rev. Lett.

Publisher: American Physical Society (APS)

ISSN (Print): 0031-9007

ISSN (Electronic): 1079-7114

Publication date Created: June 1996

Publication date (Print): June 1996

Volume: 76

Issue: 25

Pages: 4841-4844

Article

DOI: 10.1103/PhysRevLett.76.4841

PubMed ID: 10061394

SO-VID: 5b07bca8-3877-4f05-84d1-2ab5f131deca

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http://link.aps.org/licenses/aps-default-license

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Unconventional Electronic Structure Evolution with Hole Doping inBi2Sr2CaCu2O8+δ: Angle-Resolved Photoemission Results

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Crocodylian evolution

Most cited references 15

Correlated Electrons in High Temperature Superconductors

Anomalously large gap anisotropy in thea-bplane ofBi2Sr2CaCu2O8+δ

Superexchange mechanism andd-wave superconductivity

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