Fritsch, Juergen (2001) Phonons in low-dimensional systems. JOURNAL OF PHYSICS-CONDENSED MATTER, 13 (34). pp. 7611-7626. ISSN 0953-8984, 1361-648X
Full text not available from this repository. (Request a copy)Abstract
The surfaces of a crystal solid with a given crystallographic orientation are usually described by the two dimensions of their extension. In the case of well-defined periodicity, surface vibrational states are characterized by two-dimensional wavevectors with non-vanishing dispersion in all directions parallel to the surface. Microscopic processes such as rebonding of atoms and adsorption, however, can lead to structural units on a surface that show one- or even zero-dimensional signature. Phonon dispersion curves for clean and adsorbate-covered surfaces of Si and III-V compounds are computed by means of density-functional perturbation theory in the framework of slab-lattice dynamics. These systems show surface phonon modes that clearly have two-, one-, and zero-dimensional character. Vibrational states, which are obvious fingerprints of their structural origin on the surface, are discussed in detail.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AB-INITIO CALCULATION; III-V SEMICONDUCTORS; RAY STANDING-WAVE; VIBRATIONAL PROPERTIES; GAAS(110) SURFACE; SI(111); MONOLAYERS; SCATTERING; RECONSTRUCTION; DISPERSION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2021 05:38 |
| Last Modified: | 14 Dec 2021 05:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41187 |
Actions (login required)
 |
View Item |
