Vorticity, phase stiffness and the cuprate phase diagram
N. P. Ong, Yayu Wang
Abstract
We review results obtained from vortex-Nernst experiments in cuprates. Evidence for a loss of phase coherence at the Meissner transition Tc0 is derived from vortex-like excitations that persist to high temperature. Below Tc0, the Nersnt signal provides a determination of the upper critical field Hc2 vs. doping x. Implications for the cuprate phase diagram are discussed.
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