[10p-N204-1~17] 6.5 Surface Physics, Vacuum

[10p-N204-16] Surface structural analysis of CoO(111) using low energy atom scattering spectroscopy

〇Geng Tan¹, Hiroaki Fukuta¹, Akifumi Matsuda², Mamoru Yoshimoto², Kenji Umezawa¹ (1.Osaka Pref. Univ., 2.Tokyo Tech)

Keywords:Low energy atom scattering spectroscopy, Surface structural analysis, CoO(111) single crystal substrates

It is difficult to investigate the surface structural analysis of the wide band-gap insulator materials using conventional electron or charged ions due to charge-up of surfaces. Therefore, we utilized a low-energy atom scattering spectroscopy system for the analysis of insulator surface of CoO. Low-energy atom beams were produced using neutral and 100 kHz pulsed 3 keV-⁴He⁰ beams. The objective of this study is to clarify the top most atomic layer of CoO(111) and find the difference between the surface and the bulk structures.