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

Date
1998
Authors
Boyaci, H.
Kulik, I. O.
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Fizika Nizkikh Temperatur (Kharkov)
Print ISSN
0132-6414
Electronic ISSN
Publisher
Natsional'na Akademiya Nauk Ukrainy
Volume
24
Issue
4
Pages
239 - 246
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Series
Abstract

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 Φ 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 Φ=0 limit. In addition, the new states that were missing in the Lieb-Wu solution are derived.

Course
Other identifiers
Book Title
Keywords
Correlation methods, Electron energy levels, Electrons, High temperature superconductors, Mathematical models, Bound electron pairs, High temperature superconductivity, Superconductivity
Citation
Published Version (Please cite this version)