Physics – Condensed Matter – Superconductivity
Scientific paper
1997-12-09
J. Phys. Chem. Solids 59, 1888 (1998)
Physics
Condensed Matter
Superconductivity
7 pages, revtex, 7 postscript figures, SNS97 proceedings
Scientific paper
10.1016/S0022-3697(98)00136-X
In this paper, we review some of our ARPES results on the superconducting and pseudo gaps in Bi2Sr2CaCu2O8+x. We find that optimally and overdoped samples exhibit a d-wave gap, which closes at the same temperature, Tc, for all k points. In underdoped samples, a leading edge gap is found up to a temperature T* > Tc. We find that T* scales with the maximum low temperature gap, increasing as the doping is reduced. The momentum dependence of the pseudogap is similar to that of the superconducting gap; however, the pseudogap closes at different temperatures for different k points.
Campuzano Juan-Carlos
Ding Haibing
Guptasarma Prasenjit
Hinks D. G.
Kadowaki Kazuo
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