| | |
| | |
Stat |
Members: 3645 Articles: 2'504'585 Articles rated: 2609
25 April 2024 |
|
| | | |
|
Article overview
| |
|
Pseudospin Symmetry, Peierls Instability, and Charge Density Wave in a One-Dimensional Tight-Binding Model | S.Q. Shen
; X.C. Xie
; | Date: |
19 Jul 1995 | Subject: | cond-mat | Affiliation: | Oklahoma State University | Abstract: | We show that there is pseudospin SU(2) symmetry in the one-dimensional tight-binding model with the inter-molecular electron-phonon interaction. We discuss the relation between the pseudospin symmetry breaking and the charge-density wave (CDW). For a finite lattice at half-filling, the Peierls instability drives the lattice to {it dimerization} at low temperature, however, the system remains the SU(2) symmetry invariant and is not CDW state. An attractive on-site electron-electron interaction makes the pseudospin symmetry spontaneously broken in the thermodynamic limit and the CDW state arises as well. Hence, it is clear that spontaneous pseudospin symmetry breaking produces the CDW state.s the pseudospin symmetry spontaneously broken in the thermodynamic limit and the CDW state arises as well. Hence, it is clear that spontaneous pseudospin symmetry breaking produces the CDW state. | Source: | arXiv, cond-mat/9507075 | 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:
| |