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

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

2006-01-12

arxiv.org/abs/cond-mat/0601265v2

Physics

Condensed Matter

Superconductivity

Scientific paper

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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