|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
20 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The infrared conductivity of Na$_x$CoO$_2$: evidence of gapped states | | J. Hwang
; J. Yang
; T. Timusk
; F.C. Chou
; | | Date: |
10 May 2004 | | Subject: | Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el | | Abstract: | We present infrared ab-plane conductivity data for the layered cobaltate Na$_x$CoO$_2$ for $x=0.25, 0.50$, and 0.75. The Drude weight increases monotonically with hole doping, $1-x$. At the lowest hole doping level 0.75 the system resembles the normal state of underdoped cuprate superconductors with a scattering rate that varies linearly with frequency and temperature and there is an onset of scattering by a bosonic mode at 600 cm$^{-1}$. Doping to both $x=0.50$ and 0.25 causes a gap to develop in the conductivity and the material becomes an insulator. The spectral weight lost in the gap region is shifted to prominent peaks. We suggest that the two gapped states are pinned charge ordered states. | | Source: | arXiv, cond-mat/0405200 | | 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