One-step model of photoemission from single-crystal surfaces

Siddharth Karkare, Weishi Wan, Jun Feng, Tai C. Chiang, Howard A. Padmore

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In this paper, we present a three-dimensional one-step photoemission model that can be used to calculate the quantum efficiency and momentum distributions of electrons photoemitted from ordered single-crystal surfaces close to the photoemission threshold. Using Ag(111) as an example, we show that the model can not only calculate the quantum efficiency from the surface state accurately without using any ad hoc parameters, but also provides a theoretical quantitative explanation of the vectorial photoelectric effect. This model in conjunction with other band structure and wave function calculation techniques can be effectively used to screen single-crystal photoemitters for use as electron sources for particle accelerator and ultrafast electron diffraction applications.

Original languageEnglish (US)
Article number075439
JournalPhysical Review B
Volume95
Issue number7
DOIs
StatePublished - Feb 28 2017

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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