Bound electron pairs in strongly correlated models of high-temperature superconductivity

Автор(и)

  • H. Boyaci Department of Physics, Bilkent University, Bilkent, 06533 Ankara, Turkey
  • I. O. Kulik B. Verkin Institute for Low Temperature Physics and Engineering, Nat. Acad. Sci. of Ukraine, 47, Lenin Ave., 310164 Kharkov, Ukraine

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.593577

Ключові слова:

PACS: 74.20.-z, 74.20.Mn, 74.25.Jb

Анотація

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

Як цитувати

(1)
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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Надпровідність, зокрема високотемпературна

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