| | |
| | |
Stat |
Members: 3647 Articles: 2'518'564 Articles rated: 2609
16 May 2024 |
|
| | | |
|
Article overview
| |
|
Theory of acoustic surface plasmons | J. M. Pitarke
; V. U. Nazarov
; V. M. Silkin
; E. V. Chulkov
; E. Zaremba
; P. M. Echenique
; | Date: |
1 Sep 2004 | Journal: | Phys. Rev. B 70, 205403 (2004) | Subject: | Materials Science | cond-mat.mtrl-sci | Abstract: | Recently, a novel low-energy collective excitation has been predicted to exist at metal surfaces where a quasi two-dimensional (2D) surface-state band coexists with the underlying three-dimensional (3D) continuum. Here we present a model in which the screening of a semiinfinite 3D metal is incorporated into the description of electronic excitations in a 2D electron gas through the introduction of an effective 2D dielectric function. Our self-consistent calculations of the dynamical response of the 3D substrate indicate that an acoustic surface plasmon exists for all possible locations of the 2D sheet relative to the metal surface. This low-energy excitation, which exhibits linear dispersion at low wave vectors, is dictated by the nonlocality of the 3D dynamical response providing incomplete screening of the 2D electron-density oscillations. | Source: | arXiv, cond-mat/0409026 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|