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Contour plot of the anomalous Nernst coefficient v-vN in the phase diagram of LSCO. The contours indicate that the anomalous signal extends significantly above the critical temperature Tc measured by the Meissner effect. As x decreases towards 0.05, the onset temperature increases to 150 K. The plot suggests that vortex-like excitations extend to quite high temperatures in LSCO. [Xu et al. Nature 2000].

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