抄録
The dispersion curves of the surface phonons of the TiC(100) surface have been determined over the entire Brillouin zone along the Γ-M direction by using electron energy loss spectroscopy. We have observed an acoustical branch (Rayleigh mode) and three optical branches (Lucas and Wallis modes and a new mode), which are assigned from a simple calculation based on the nearest-neighbour force constant model. The stiffening of the stretching force constant between the topmost layer and the second layer results in a new mode, which explains qualitatively the new observed optical mode.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 519-527 |
| ページ数 | 9 |
| ジャーナル | Surface Science |
| 巻 | 178 |
| 号 | 1-3 |
| DOI | |
| 出版ステータス | Published - 1986 12月 3 |
ASJC Scopus subject areas
- 物理化学および理論化学
- 凝縮系物理学
- 表面および界面