Enhanced pairing correlations in the two-leg Hubbard ladder
Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 56, Issue: 12, Page: 7162-7166
1997
- 93Citations
- 26Captures
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Article Description
The two-leg Hubbard ladder is characterized by the ratio of the inter- to intra-leg hopping (Formula presented), the relative interaction strength (Formula presented) and the electron filling. Here, using density matrix renormalization group and Monte Carlo simulations, we examine the dependence of the pairing correlations on these parameters. We find that the pairing correlations are enhanced when the top of the bonding quasiparticle band and the bottom of the antibonding band are near the Fermi level. We present results on the single-particle spectral weight and the antiferromagnetic correlations in order to explain this behavior. © 1997 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0000937818&origin=inward; http://dx.doi.org/10.1103/physrevb.56.7162; https://link.aps.org/doi/10.1103/PhysRevB.56.7162; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.56.7162/fulltext; http://link.aps.org/article/10.1103/PhysRevB.56.7162
American Physical Society (APS)
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