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

M. R. Norman·H. Ding·H. Fretwell·M. Randeria·J. C. Campuzano
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Abstract

The self-energy $Σ({\bf k},ω)$, 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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M. R. Norman, H. Ding, H. Fretwell, M. Randeria, J. C. Campuzano. 1999-06-18. Extraction of the Electron Self-Energy from Angle Resolved Photoemission Data: Application to Bi2212. https://doi.org/10.1103/physrevb.60.7585

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