Phys. Rev. B 54, 14971–14973 (1996)dx2-y2 symmetry and the pairing mechanismReceived 21 February 1995; revised 2 August 1996; published in the issue dated 1 December 1996 An important question is, if the gap in the high-temperature cuprates has dx2-y2 symmetry, what does that tell us about the underlying interaction responsible for pairing? Here we explore this by determining how three different types of electron-phonon interactions affect the dx2-y2 pairing found within a random phase approximation treatment of the two-dimensional Hubbard model. These results imply that interactions which become more positive as the momentum transfer increases favor dx2-y2 pairing in a nearly half-filled band. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.54.14971
DOI:
10.1103/PhysRevB.54.14971
PACS:
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