Energy gap evolution in the tunneling spectra of Bi2Sr2CaCu2O8+d

Details Energy gap evolution in the tunneling spectra of Bi2Sr2CaCu2O8+d Energy gap evolution in the tunneling spectra of Bi2Sr2CaCu2O8+d

2002-04-09

arxiv.org/abs/cond-mat/0204191v1

Physics

Condensed Matter

Superconductivity

7 pages, 6 figures, reference for figures: http://mary.sci.hokudai.ac.jp/LABS/kouatsu/egefigure/index.html

Scientific paper

10.1143/JPSJ.71.1535

On the basis of the tunneling spectra of Bi2212, we report that there exist two kinds of pseudogaps; one with a characteristic energy comparable to the superconducting (SC) gap and another one that is 3 to 4 times larger. The smaller energy-scale pseudogap (SPG) develops progressively below temperature T*, which nearly scales with the SC gap amplitude D0, in addition to the larger energy-scale pseudogap (LPG). The SPG smoothly develops into the SC-state gap with no tendency to close at Tc.

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