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

Y. Dagan; M. M. Qazilbash; R. L. Greene

doi:10.1103/PhysRevLett.94.187003

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

Superconductivity 2007-05-23 v1 Strongly Correlated Electrons

Authors: 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.

Keywords

tunneling conductance normal state gap Pr(2-x)CexCuO4 doping dependence pseudogap cuprate superconductors

Cite

@article{arxiv.cond-mat/0412328,
  title  = {Tunneling into the normal state of Pr(2-x)CexCuO4},
  author = {Y. Dagan and M. M. Qazilbash and R. L. Greene},
  journal= {arXiv preprint arXiv:cond-mat/0412328},
  year   = {2007}
}

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