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arXiv · 1206.2093

Enhanced Josephson tunneling between high temperature superconductors through a normal pseudogap underdoped cuprate with a finite energy cooperon

Kun Huang·Wei-Qiang Chen·T. M. Rice·F. C. Zhang
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Abstract

The Josephson coupling between optimally cuprate superconductors separated by a spacer with a finite energy cooperon excitation which contributes to the Josephson coupling strength, is examined. For an underdoped cuprate barrier in its normal state, the YRZ model gives a good description of the temperature dependent enhanced Josephson coupling. A detailed examination of origin of the enhancement shows a significant contribution from the cooperon excitation which is comparable to that from nodal quasiparticles.

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Kun Huang, Wei-Qiang Chen, T. M. Rice, F. C. Zhang. 2012-06-11. Enhanced Josephson tunneling between high temperature superconductors through a normal pseudogap underdoped cuprate with a finite energy cooperon. https://doi.org/10.1209/0295-5075%2F99%2F24002

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