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d-Wave and s-wave superconductivity in two coupled Hubbard planes and comparison with neutron scattering in YBa2Cu3O7

โœ Scribed by T. Dahm; L. Tewordt

Book ID
108024980
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
344 KB
Volume
253
Category
Article
ISSN
0921-4534

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Physical quantities in the normal and d
Physical quantities in the normal and d wave superconducting states of the Hubbard model for YBa2Cu3O7โˆ’y
โœ T. Dahm; L. Tewordt ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 863 KB

We have extended the previous fluctuation exchange approximation for the two-dimensional Hubbard model to a Fermi surface geometry approximating that of the YBazCu307\_y cuprates. In spite of the poor nesting of this Fermi surface we obtain a broad commensurate peak in the spectral density of the dy