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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
T
c 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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