Exact demonstration of η pairing in the ground state of an attractive-UHubbard model
- 17 June 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 66 (24) , 3203-3204
- https://doi.org/10.1103/physrevlett.66.3203
Abstract
We show that the recently discovered η-pairing scheme combined with the Nagaoka-Thouless picture for itinerant ferromagnetism leads to a new type of superconductivity in the attractive-U Hubbard model in the sector 0<(-)/(+)≪1, where and are the occupation numbers of up and down spins. This results holds for all dimensionalities d≥2.
Keywords
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