Collective Modes and the Superconducting State Spectral Function of Bi2212

Details Collective Modes and the Superconducting State Spectral Function of Bi2212 Collective Modes and the Superconducting State Spectral Function of Bi2212

1997-12-10

arxiv.org/abs/cond-mat/9712116v1

Phys. Rev. B 57, R11089 (1998)

Physics

Condensed Matter

Superconductivity

4 pages, revtex, 4 encapsulated postscript figures

Scientific paper

10.1103/PhysRevB.57.R11089

Photoemission spectra of the high temperature superconductor Bi2212 near (pi,0) show a dramatic change when cooling below Tc: the broad peak in the normal state turns into a sharp low energy peak followed by a higher binding energy hump. Recent experiments find that this low energy peak persists over a significant range in momentum space. We show in this paper that these data are well described by a simple model of electrons interacting with a collective mode which appears only below Tc.

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