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Tunneling into the normal state of Pr(2-x)CexCuO4

Y. Dagan·M. M. Qazilbash·R. L. Greene
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Abstract

The 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.

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Y. Dagan, M. M. Qazilbash, R. L. Greene. 2004-12-13. Tunneling into the normal state of Pr(2-x)CexCuO4. https://doi.org/10.1103/physrevlett.94.187003

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