Supercurrents and persistent currents in strongly correlated electron systems
Author
Boyacı, Hüseyin
Advisor
Kulik, Igor O.
Date
1995Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
The lull understanding· ol’the solution Гог the 1-tl Hubbard model is of interest
in its own right, and may provide clues to the understanding of higher dimensioned
systiMiis. We have found tin? exact solution of tlie model for tw<j eh'ctrons, with
a magnetic flux ар[)Н(ч1, and showed some new results. We have also made
calculations for more than two electrons on a looj) with a magnetic flux through
it, using the Bethe-ansatz equations. Within the assumption that oxygen orbitals
may play a fundarnentid role in the superconductive properties of Си —О high IT
matc.'iials, exact calculaticnis ol the ground-stat<' eu<‘igy for two electrons in the
contraction mechanism have been performed, do test the beginning assumption,
some numerical calculations have been i)resent(;d.
Keywords
strongly correlated electron systems1-d Hubbard model
contraction model
high IT superconductivity
mesoscopics