| | |
| | |
Stat |
Members: 3645 Articles: 2'503'724 Articles rated: 2609
24 April 2024 |
|
| | | |
|
Article overview
| |
|
BCS theory for finite size superconductor | Antonio M. Garcia-Garcia
; Juan Diego Urbina
; Emil A. Yuzbashyan
; Klaus Richter
; Boris L. Altshuler
; | Date: |
11 Oct 2007 | Abstract: | We study finite size effects in superconducting metallic grains and determine
the BCS order parameter and the low energy excitation spectrum in terms of the
number of electrons, size, and shape of the grain. Our approach combines the
BCS self-consistency condition, a semiclassical expansion for the spectral
density and interaction matrix elements, and corrections to the BCS mean-field.
In chaotic grains mesoscopic fluctuations of the matrix elements lead to a
smooth dependence of the order parameter on the excitation energy. In the
integrable case we observe shell effects when e.g. a small change in the
electron number leads to large changes in the energy gap. | Source: | arXiv, 0710.2286 | 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)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |