Pseudogap effects induced by resonant pair scattering
- The James Franck Institute, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 (United States)
We demonstrate how resonant pair scattering of correlated electrons above T{sub c} can give rise to pseudogap behavior. This resonance in the scattering T matrix appears for superconducting interactions of intermediate strength, within the framework of a simple fermionic model. It is associated with a splitting of the single peak in the spectral function into a pair of peaks separated by an energy gap. Our physical picture is contrasted with that derived from other T-matrix schemes, with superconducting fluctuation effects, and with preformed pair (boson-fermion) models. Implications for photoemission and tunneling experiments in the cuprates are discussed. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 544962
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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