Weak Pseudogap Behavior in the Underdoped Cuprate Superconductors

Jörg Schmalian; David Pines; Branko Stojković

doi:10.1103/PhysRevLett.80.3839

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Weak Pseudogap Behavior in the Underdoped Cuprate Superconductors

Jörg Schmalian, David Pines, Branko Stojković

DOI 10.1103/PhysRevLett.80.3839 · Physical Review Letters

T1

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Abstract

We report on a novel solution of the nearly antiferromagnetic (AF) spin fermion model in the limit πT≫ωsf, which demonstrates that the broad high energy features found in angular resolved photoemission spectroscopy measurements of the spectral density of the underdoped cuprates are determined by strong (AF) correlations and precursor effects of a spin density wave state. We show that the onset temperature, Tcr, of weak pseudogap behavior is determined by the strength, ξ, of the (AF) correlations, and obtain the generic changes in low frequency magnetic behavior seen in NMR experiments with ξ(Tcr)≈2, confirming the Barzykin and Pines crossover criterion.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2Ca1-xDyxCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6.63 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown