Evidence for two competing order parameters in underdoped cuprates superconductors from a model analysis of the Fermi-arc effects

Details Evidence for two competing order parameters in underdoped cuprates superconductors from a model analysis of the Fermi-arc effects Evidence for two competing order parameters in underdoped cuprates superconductors from a model analysis of the Fermi-arc effects

2009-11-10

arxiv.org/abs/0911.1887v1

Phys. Rev. Lett. 103, 217001 (2009).

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures, accepted for publication in Phys. Rev. Lett

Scientific paper

Preformed pairs above $T_c$ and the two-gap scenarios are two main proposals for describing the low doping pseudogap phase of high-$T_c$ cuprates. Very recent angle-resolved photoemission experiments have shown features which were interpreted as evidence for preformed pairs. Here it is shown that those results can be explained also in the context of the two-gap scenario if self-energy effects are considered. The discussion is based on the $d$-CDW theory or the flux phase of the $t-J$ model.

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