Evidence for Two Competing Order Parameters in Underdoped Cuprate Superconductors from a Model Analysis of Fermi-Arc Effects
Andrés Greco
DOI 10.1103/PhysRevLett.103.217001 · Physical Review Letters
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Abstract
Preformed pairs above Tc and the two-gap scenarios are two main proposals for describing the low-doping pseudogap phase of high-Tc 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 charge-density wave theory or the flux phase of the t−J model.
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