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Persistence of vortexlike phase fluctuations in underdoped to heavily overdoped cuprates - Nature Communications

doi.org

The role of superconducting phase fluctuations in overdoped cuprates remains controversial. Here, the authors observe an unexpected nonmonotonic doping dependence of phase fluctuations in Bi2+xSr2−x−yLayCuO6+δ, where vortex-like phase fluctuations are enhanced in both under- and overdoped samples.

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