The Origin of Fermi Arcs in Cuprate Pseudogap States and Strong Constraints on Viable Theories of High-Temperature Superconductivity

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A full Fermi surface exists in underdoped high-temperature superconductors if the temperature T lies above the pseudogap temperature T*. Below T* only arcs of Fermi surface survive, scaling with T/T* as T -> 0, with T* displaying strong doping dependence. There is no accepted explanation for this behavior. We show that generalizing the BCS theory of normal superconductivity to include d-wave pairs and antiferromagnetism leads to the origin and doping dependence of the T* scale, and a quantitative description of Fermi arcs. These results place strong constraints on viable theories of high-temperature superconductivity.
4 pages, 3 figures

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Superconductivity, Strongly Correlated Electrons, Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/138902

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0705.0822
 http://arxiv.org/abs/0705.0822

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arXiv