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Phys. Rev. B 57, 13406–13409 (1998)

Pseudogap above Tc in a model with dx2-y2 pairing

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Jan R. Engelbrecht and Alexander Nazarenko
Department of Physics, Boston College, Chestnut Hill, Massachusetts 02167

Mohit Randeria
Theoretical Physics Group, Tata Institute of Fundamental Research, Mumbai 400005, India

Elbio Dagotto
Department of Physics and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306

Received 16 May 1997; published in the issue dated 1 June 1998

We study the anomalous normal-state properties of a simple two-dimensional model whose ground state is a d-wave superconductor. Using a self-consistent, conserving formulation, we show that pairing correlations above Tc lead to the appearance of a highly anisotropic pseudogap in the electronic spectral function and the destruction of the Fermi surface. We discuss the similarities and differences between our results and angle-resolved photoemission spectroscopy experiments on underdoped cuprates.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.57.13406
DOI:
10.1103/PhysRevB.57.13406
PACS:
74.20.Mn, 74.25.Dw
 
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