Bare electron dispersion from photoemission experiments

Details Bare electron dispersion from photoemission experiments Bare electron dispersion from photoemission experiments

2004-05-30

arxiv.org/abs/cond-mat/0405696v2

Phys. Rev. B 71, 214513 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages 3 figures revtex, corrected misprints

Scientific paper

10.1103/PhysRevB.71.214513

Performing an in-depth analysis of the photoemission spectra along the nodal direction of the high temperature superconductor Bi-2212 we have developed a procedure to determine the underlying electronic structure and established a precise relation of the measured quantities to the real and imaginary parts of the self-energy of electronic excitations. The self-consistency of the procedure with respect to the Kramers-Kronig transformation allows us to draw conclusions on the applicability of the spectral function analysis and on the existence of well defined quasiparticles along the nodal direction even for the underdoped Bi-2212 in the pseudogap state.

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