Abstract
The self-energy the fundamental function that 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 in the normal, superconducting, and pseudogap phases.
- Received 23 November 1998
DOI:https://doi.org/10.1103/PhysRevB.60.7585
©1999 American Physical Society