Photoinduced bulk-surface dynamics: Time resolved two photon photoemission signals at semiconductor surfaces

S. Ramakrishna*, F. Willig, A. Knorr

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A free particle theory of photoinduced bulk-surface dynamics at semiconductor surfaces is developed wherein relaxation processes arising from electron-electron and electron-phonon scattering are treated phenomenologically. The role played by bulk-surface dynamics in the thermalization and cooling processes of the bulk and the complementary issue of how bulk dynamics influences the surface state occupancy are both studied. Time resolved 2PPE spectra is analysed both in the context of pure bulk as well as combined bulk-surface dynamics and its relation to the time dependent populations in the conduction band and surface states is discussed.

Original languageEnglish (US)
Pages (from-to)159-173
Number of pages15
JournalSurface Science
Volume558
Issue number1-3
DOIs
StatePublished - Jun 1 2004

Keywords

  • Atomistic dynamics
  • Photoemission (total yield)
  • Semiconducting surfaces
  • Surface electronic phenomena (work function, surface potential, surface states, etc.)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Photoinduced bulk-surface dynamics: Time resolved two photon photoemission signals at semiconductor surfaces'. Together they form a unique fingerprint.

Cite this