Direct test of pairing fluctuations in the pseudogap phase of underdoped cuprates

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We report on a direct test of pairing fluctuations in the pseudogap regime of underdoped superconducting cuprates using a Josephson junction. In this experiment, the coupling between a rigid superconducting pair field and pairing fluctuations produces a strong specific signature in the current-voltage characteristics. Our results show that fluctuations survive only close to Tc (T-Tc<15K) and therefore cannot be responsible for the opening of the pseudogap at high temperature.

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/106995

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0601265
 http://arxiv.org/abs/cond-mat/0601265

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arXiv