Refine your search�ソスF     
Report No.
 - 

Reflection high-energy positron diffraction study of surface super-structures

Kawasuso, Atsuo; Fukaya, Yuki   ; Hayashi, Kazuhiko*; Hashimoto, Mie; Ichimiya, Ayahiko

In this study, we performed the positron energy loss spectroscopy measurements from several surfaces using energy-filtered reflection high-energy positron diffraction. For Si(111)-7$$times$$7 surface, we observed at least five distinct loss peaks. The interval of energy loss peaks is approximately 10 eV, which corresponds to the surface plasmon loss energy of silicon. The positron energy loss spectra are well-approximated by the Poisson distribution. The average excitation number of surface plasmon is 2.6 under the total reflection condition. This number is similar to what expected for electrons at zero glancing angle. Thus, positrons lose their energy due to surface plasmon excitation much more sufficiently than electrons. We found that the specular spot is broadened in the total reflection region especially at the tail part due to plasmon excitation.

Accesses

:

- Accesses

InCites™

:

Percentile:0.07

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.