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29 March 2024
 
  » arxiv » cond-mat/0412328

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Tunneling into the normal state of Pr(2-x)CexCuO4
Y. Dagan ; M. M. Qazilbash ; R. L. Greene ;
Date 13 Dec 2004
Subject Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el
AbstractThe temperature dependence of the tunneling conductance was measured for various doping levels of Pr(2-x)CexCuO4 using planar junctions. A normal state gap is seen at all doping levels studied, x=0.11 to x=0.19. We find it to vanish above a certain temperature T*. T* is greater than Tc for the underdoped region and it follows Tc on the overdoped side. This behavior suggests finite pairing amplitude above Tc on the underdoped side.
Source arXiv, cond-mat/0412328
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