Electron transition probabilities in elementary electron-phonon scattering processes using electron-energy-loss spectroscopy

Application to graphite

Hirofumi Yanagisawa, Toma Yorisaki, Ryota Niikura, Shuhei Kato, Yasuchika Ishida, Kenji Kamide, Chuhei Oshima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have investigated coupling constants in elementary electron-phonon scattering processes on a graphite surface by the combined use of high-resolution electron-energy-loss spectroscopy (HREELS) and very low-energy electron diffraction (VLEED). HREELS is used to measure the modulations of electron transition probabilities from incoming electrons in vacuum to outgoing electrons in vacuum where the transition includes one-phonon scattering processes inside a solid. Determining the electronic band structures of graphite with VLEED, we defined electronic states of the solid surface that electrons entered before and after scattering off phonons. Thus, we observed that the measured electron transition probabilities significantly depended on whether the electrons were in a bulk Bloch state or an evanescent state before scattering off the phonons. This result clearly indicates that the measured electron transition probabilities reflect the strength of the coupling constants in the solid.

Original languageEnglish
Article number235430
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number23
DOIs
Publication statusPublished - 2010 Jun 21

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Phonon scattering
Electron scattering
Graphite
Electron energy loss spectroscopy
electron transitions
Electron transitions
transition probabilities
graphite
energy dissipation
electron energy
Electrons
Low energy electron diffraction
Phonons
scattering
spectroscopy
electrons
Vacuum
Scattering
phonons
electron diffraction

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Electron transition probabilities in elementary electron-phonon scattering processes using electron-energy-loss spectroscopy : Application to graphite. / Yanagisawa, Hirofumi; Yorisaki, Toma; Niikura, Ryota; Kato, Shuhei; Ishida, Yasuchika; Kamide, Kenji; Oshima, Chuhei.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 81, No. 23, 235430, 21.06.2010.

Research output: Contribution to journalArticle

Yanagisawa, Hirofumi ; Yorisaki, Toma ; Niikura, Ryota ; Kato, Shuhei ; Ishida, Yasuchika ; Kamide, Kenji ; Oshima, Chuhei. / Electron transition probabilities in elementary electron-phonon scattering processes using electron-energy-loss spectroscopy : Application to graphite. In: Physical Review B - Condensed Matter and Materials Physics. 2010 ; Vol. 81, No. 23.
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