|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Effect of doping on irreversible Campbell length in MgB$_2$ single crystals | | C. Martin
; M. D. Vannette
; R. T. Gordon
; R. Prozorov
; J. Karpinski
; N. D. Zhigadlo
; | | Date: |
19 Jul 2008 | | Abstract: | We have measured small-amplitude rf penetration depth $lambda(H,T)$ in pure
and C, Li and (Li+C) doped single crystals of MgB$_2$. The effect of doping on
the critical temperature T$_c$ and on the upper critical field H$_{c2}$ was
found to be in good agreement with previous results. We report the presence of
clear signatures of irreversibility in $lambda(H,T)$, associated with the peak
effect. Carbon doping enhances the signature and shifts its position on the H-T
phase diagram to higher temperatures. Contrary to this, Li substitution has the
effect of suppressing the peak effect to lower temperatures. Analysis of both
zero field (ZFC) and field cooled (FC) measurements suggests that the
hysteresis associated with the peak effect is due to macroscopic screening
supercurrents, $j$, generated during the magnetic field ramp. | | Source: | arXiv, 0807.3098 | | 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