Abstract
Angle-resolved photoemission data from bulk (Formula presented) show changes in the excitation gap and line shape versus both doping and temperature. We employ two different quantitative analyses; one to search for a gap closing temperature (Formula presented) and the other to further characterize its relation to the superconducting transition temperature (Formula presented) We present observations of the sharp feature near crystal momentum (Formula presented) in superconducting spectra, and its temperature and doping dependence. This temperature dependence is analyzed together with the shift in the spectral weight’s lowest binding energy (leading edge). Finally, we find evidence for persistence of this sharp peak at temperatures slightly above (Formula presented).
Original language | English (US) |
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Pages (from-to) | 14185-14189 |
Number of pages | 5 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 56 |
Issue number | 21 |
DOIs | |
State | Published - 1997 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics