Gutzwiller-projected wave functions for the pseudogap state of underdoped high-temperature superconductors

Details Gutzwiller-projected wave functions for the pseudogap state of underdoped high-temperature superconductors Gutzwiller-projected wave functions for the pseudogap state of underdoped high-temperature superconductors

2010-07-28

arxiv.org/abs/1007.5067v2

Rapid Communication in Phys. Rev. B 84, 060503(R) (2011)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.84.060503

Recent experiments strongly suggest that a Fermi surface reconstruction and multiple Fermi pockets are important common features of the underdoped high-temperature cuprate superconductors. A related theoretical work [Phys. Rev. B 79, 134512 (2009)] has demonstrated that a number of hallmark phenomena observed in the underdoped cuprates appear naturally in the scenario of a paired electron pocket co-existing with unpaired hole pockets. We propose Gutzwiller-projected wave-functions to describe this two-fluid state as well as two competing states in its vicinity. It is argued that a pseudogap state constructed from these wave-functions may be selected by energetics at finite temperatures due to spin fluctuations.

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