|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
27 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Pomeranchuk and other Instabilities in the t-t' Hubbard model at the Van Hove Filling | | V. Hankevych
; I. Grote
; F. Wegner
; | | Date: |
10 May 2002 | | Journal: | Phys. Rev. B 66, 094516 (2002) | | Subject: | Strongly Correlated Electrons; Superconductivity | cond-mat.str-el cond-mat.supr-con | | Abstract: | We present a stability analysis of the two-dimensional t-t’ Hubbard model for various values of the next-nearest-neighbor hopping t’, and electron concentrations close to the Van Hove filling by means of the flow equation method. For t’ > -t/3 a d_{x^2-y^2}-wave Pomeranchuk instability dominates (apart from antiferromagnetism at small t’). At t’ < -t/3 the leading instabilities are a g-wave Pomeranchuk instability and p-wave particle-hole instability in the triplet channel at temperatures T < 0.15t, and an s^*-magnetic phase for T > 0.15t; upon increasing the electron concentration the triplet analog of the flux phase occurs at low temperatures. Other weaker instabilities are found also. | | Source: | arXiv, cond-mat/0205213 | | 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:
| |
REGISTER