Bound electron pairs in strongly correlated models of high-temperature superconductivity
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.593577Ключові слова:
PACS: 74.20.-z, 74.20.Mn, 74.25.JbАнотація
The ground-state energy of two electrons on a ring is calculated for the one-dimensional Hubbard model with positive and negative on-site interaction and for the contraction model with additive and multiplicative interaction terms. The hc/2e periodicity of the ground-state energy with respect to a flux Ф threading the loop is derived. The periodicity may serve as an indication of superconductivity. The results are shown to be consistent with the Lieb-Wu solution for Ф = 0 limit. In addition, the new states that were missing in the Lieb-Wu solution are derived.
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Опубліковано
1998-04-10
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H. Boyaci and I. O. Kulik, Bound electron pairs in strongly correlated models of high-temperature superconductivity, Low Temp. Phys. 24, (1998) [Fiz. Nizk. Temp. 24, 316-325, (1998)] DOI: https://doi.org/10.1063/1.593577.
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