Pairing as a Mechanism of Superconductivity in Models of Strongly Correlated Electrons
- 30 January 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (5), 789-792
- https://doi.org/10.1103/physrevlett.74.789
Abstract
We consider extended versions of the Hubbard model which contain additional interactions between nearest neighbors. In this Letter we show that a large class of these models has a superconducting ground state in arbitrary dimensions. In some special cases we are able to find the complete phase diagram. The superconducting phase exists even for moderate repulsive values of the Hubbard interaction .
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