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Antiferromagnetic and superconducting states in the three-band two-dimensional repulsive Hubbard model

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Abstract

The three-band two-dimensional repulsive Hubbard model in the formalism of the temperature Green function is investigated. The applicability of the weak coupling approach at the values of the dimensionless coupling constant U/t≈10–11 is justified. The normal state, the antiferromagnetic state with Neel magnetic ordering on the “copper” sublattice, and the superconducting state with nontrivial Cooper pairing in channels with odd angular momenta are studied. The possibility of other magnetic states in the model is discussed. Bibliography: 20 titles.

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Authors
  1. K. Malyshev
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  2. V. N. Popov
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Additional information

Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 209, 1994, pp. 194–228.

Translated by K. Malyshev.

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Malyshev, K., Popov, V.N. Antiferromagnetic and superconducting states in the three-band two-dimensional repulsive Hubbard model. J Math Sci 83, 123–144 (1997). https://doi.org/10.1007/BF02398467

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  • DOI: https://doi.org/10.1007/BF02398467

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