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Pair phase fluctuations and the pseudogap

Pair phase fluctuations and the pseudogap The single-particle density of states and the tunneling conductance are studied for a two-dimensional BCS-like Hamiltonian with a d x 2 - y 2 -gap and phase fluctuations. The latter are treated by a classical Monte Carlo simulation of an XY model. Comparison of our results with recent scanning tunneling spectra of Bi-based high- T c cuprates supports the idea that the pseudogap behavior observed in these experiments can be understood as arising from phase fluctuations of a d x 2 - y 2 pairing gap whose amplitude forms on an energy scale set by T c MF well above the actual superconducting transition. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Pair phase fluctuations and the pseudogap

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2002 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.66.140510
Publisher site
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Abstract

The single-particle density of states and the tunneling conductance are studied for a two-dimensional BCS-like Hamiltonian with a d x 2 - y 2 -gap and phase fluctuations. The latter are treated by a classical Monte Carlo simulation of an XY model. Comparison of our results with recent scanning tunneling spectra of Bi-based high- T c cuprates supports the idea that the pseudogap behavior observed in these experiments can be understood as arising from phase fluctuations of a d x 2 - y 2 pairing gap whose amplitude forms on an energy scale set by T c MF well above the actual superconducting transition.

Journal

Physical Review B – American Physical Society (APS)

Published: Oct 1, 2002

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