Staggered Flux Vortices and the Superconducting Transition in the Layered Cuprates

Carsten Honerkamp; Patrick A. Lee

doi:10.1103/PhysRevLett.92.177002

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Staggered Flux Vortices and the Superconducting Transition in the Layered Cuprates

Carsten Honerkamp, Patrick A. Lee

DOI 10.1103/PhysRevLett.92.177002 · Physical Review Letters

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Abstract

We propose an effective model for the superconducting transition in the high-Tc cuprates motivated by the SU(2) gauge theory approach. In addition to variations of the superconducting phase we allow for local admixture of staggered flux order. This leads to an unbinding transition of vortices with a staggered flux core that are energetically preferable to conventional vortices. Based on parameter estimates for the two-dimensional t−J model we argue that the staggered flux vortices provide a way to understand a phase with a moderate density of mobile vortices over a large temperature range above Tc that yet exhibits otherwise normal transport properties. This picture is consistent with the large Nernst signal observed in this region.

Source-reported materials — not catalogue approval

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