Tunneling into the normal state of Pr2-xCexCuO4

Y. Dagan*, M. M. Qazilbash, R. L. Greene

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The temperature dependence of the tunneling conductance was measured for various doping levels of Pr2-xCexCuO4 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.

Original languageEnglish
Article number187003
JournalPhysical Review Letters
Issue number18
StatePublished - 13 May 2005
Externally publishedYes


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