出典:Wikipedia
出典:『Wikipedia』 (2010/01/19 11:59 UTC 版)
Phonons are collective lattice vibration modes, and surface phonons are those particular modes associated with surfaces; they are an artifact of periodicity, symmetry, and the termination of bulk crystal structure associated with the surface layer of a solid [1]. The study of surface phonons provides valuable insight into the surface structure and other properties specific to the surface region, which often differ from bulk. The figure below gives a pictoral representation of the atomic motion in a phonon mode.