Angle resolved Photoemission from Cu single crystals; Known Facts and a few Surprises about the Photoemission Process

TL;DR

This paper provides a detailed analysis of angle-resolved photoemission spectra for copper single crystals, revealing new insights into the photoemission process, band structure, and electron lifetimes across a wide photon energy range.

Contribution

It offers the first systematic collection of spectra that elucidates the influence of final states and electron dynamics in copper photoemission.

Findings

Insights into the influence of final states on photoemission

Detailed band structure information for Cu(100) and Cu(111)

Data on electron lifetimes at high excitation energies

Abstract

We present angle resolved photoemission spectra for Cu(100) and Cu(111) singly crystals in normal emission geometry, taken at tightly spaced intervals for photon energies between 8 eV and 150 eV. This systematic collection of spectra gives unprecedented insight into the influence of the final states to the photoemission process as well as the band structure and lifetimes of highly excited electrons in Cu.