Electronic-Spectrum of the High-Temperature Superconducting State

Giorgio Margaritondo, Helmuth Berger
1991
Article

Résumé

Improved experimental conditions enabled us to increase the signal-to-noise ratio of the photoemission spectra for the superconducting state of Bi2Ca2SrCu2O8, taken with high angular and energy resolution. This also enabled us to reveal a pronounced minimum that separates the two basic features of the spectrum, the narrow quasiparticle excitation peak and the still controversial broad band at lower kinetic energies. The minimum is approximately 3-DELTA below the Fermi level.

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https://infoscience.epfl.ch/record/90090?ln=fr

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Electronic-Spectrum of the High-Temperature Superconducting State

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