Room-temperature superconductor
- Room-temperature superconductor
A room-temperature superconductor is a material yet to be discovered which would be capable of exhibiting superconducting properties at temperatures above 0° C (273.15 K). This is of course not strictly speaking "room temperature" (20–25°C); however, it can be reached very cheaply.
Since the discovery of high-temperature superconductors, several materials have been claimed as being room-temperature superconductors. In every case, independent investigation has quickly proven these claims false. As a result, most condensed matter physicists now welcome with extreme skepticism any further claims of this natureFact|date=September 2008.
As of 2006, the highest-temperature superconductor (at ambient pressure) is mercury thallium barium calcium copper oxide (Hg12Tl3Ba30Ca30Cu45O125), at 138 K, though there are claims that this can be raised to 164 K by applying high pressure to the superconductor.
A potential candidate for room temperature superconductivity (though at extreme pressure) is metallic hydrogen; research into this possibility (and into how to reduce the pressure requirements) has resulted in the discovery of superconductivity in Silane (SiH4). [ [http://www.eetimes.com/news/latest/showArticle.jhtml;jsessionid=HTTOTGYXPCPWSQSNDLSCKHA?articleID=206904213 EE Times corrects story on silane as a potential superconductor] "EE Times", 24 March 2008. Retrieved on 7 October 2008.] [cite journal
author = M. I. Eremets, I. A. Trojan, S. A. Medvedev, J. S. Tse, Y. Yao
title = Superconductivity in Hydrogen Dominant Materials: Silane
journal = Science
volume = 319
issue = 5869
pages = 1506–1509
year = 2008
doi = 10.1126/science.1153282
pmid = 18339933 ]
External links
* http://arxiv.org/abs/cond-mat/0606187 - a book
* http://xxx.lanl.gov/abs/0704.2188 - a chapter
References
Wikimedia Foundation.
2010.
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