{ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} symmetry and the pairing mechanism

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.14971· OSTI ID:397598

Bulut, N; Scalapino, D J ^[1]

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1. Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)

An important question is, if the gap in the high-temperature cuprates has {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} 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 {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} 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 {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} pairing in a nearly half-filled band. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 397598
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 21 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BAND THEORY
CUPRATES
D WAVES
ELECTRON-PHONON COUPLING
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
PAIRING INTERACTIONS
TWO-DIMENSIONAL CALCULATIONS