Extraction of the Electron Self-Energy from Angle Resolved Photoemission Data: Application to Bi2212

Details Extraction of the Electron Self-Energy from Angle Resolved Photoemission Data: Application to Bi2212 Extraction of the Electron Self-Energy from Angle Resolved Photoemission Data: Application to Bi2212

1998-06-22

arxiv.org/abs/cond-mat/9806262v2

Phys. Rev. B 60, 7585 (1999)

Physics

Condensed Matter

Superconductivity

expanded version (6 pages), to be published, Phys Rev B (1 Sept 99)

Scientific paper

10.1103/PhysRevB.60.7585

The self-energy $\Sigma({\bf k},\omega)$, the fundamental function which describes the effects of many-body interactions on an electron in a solid, is usually difficult to obtain directly from experimental data. In this paper, we show that by making certain reasonable assumptions, the self-energy can be directly determined from angle resolved photoemission data. We demonstrate this method on data for the high temperature superconductor $Bi_2Sr_2CaCu_2O_{8+x}$ (Bi2212) in the normal, superconducting, and pseudogap phases.

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