Posts Tagged ‘superconductors’
‘Pseudogap’ fuels superconductor feats
CALTECH (US) — New research on how copper oxides conduct electricity at higher temperatures may lead to cheaper superconductors. Continue…
Tuesday, January 3, 2012 13:34 - 2 Comments
Top Stories - Jun 29, 2011 9:37 - 0 Comments
Ripples warp graphene’s conductivity
U. BUFFALO (US) — Folds or bends in graphene act like construction zones in a superhighway—making it difficult for electric charges to travel smoothly through. (more…)
Science & Technology - Jun 14, 2011 14:51 - 0 Comments
Superconductivity, Einstein team up
UC SANTA BARBARA (US) — Scientists have used Einstein’s theory of relativity to demonstrate it is possible to reproduce the Josephson junction, a main ingredient in superconductivity applications. (more…)
Science & Technology - Jun 14, 2011 12:46 - 0 Comments
How to morph into a superconductor
U. BUFFALO (US) — By combining sodium and hydrogen, it may be possible to convert the resulting compound into a superconducting metal under significantly lower pressure. (more…)
Top Stories - Mar 31, 2011 11:53 - 3 Comments
New phase of matter hiding in the ‘gap’
STANFORD (US) — Scientists have found the strongest evidence for a new phase of matter by studying a puzzling gap in the electronic structures of some high-temperature superconductors. (more…)
Science & Technology - Jul 22, 2010 15:53 - 1 Comment
Superconductivity’s secret ‘broken symmetry’
CORNELL (US)—Scientists have found a “broken symmetry,” where electrons act like molecules in a liquid crystal: Electrons between copper and oxygen atoms arrange themselves differently “north-south” than “east-west.” (more…)
Science & Technology - Jun 9, 2010 14:51 - 1 Comment
Dawdling electrons move at their own pace
CORNELL (US)—Scientists for the first time have produced images of “heavy fermions”—electrons that move through a conductor as if their mass were up to 1,000 times what it should be. (more…)
Earth & Environment - Mar 9, 2010 11:09 - 0 Comments
Sun pummeled Earth’s wimpy magnetic field
U. ROCHESTER (US)—The Earth’s magnetic field 3.5 billion years ago was only half as strong as it is today, new research shows. The weakness—coupled with a strong solar wind—likely allowed particles from the young Sun to strip water from early Earth’s atmosphere. (more…)
Science & Technology - Jan 19, 2010 13:11 - 2 Comments
Superconductivity in iron compound
CORNELL—A surprising discovery of electronic liquid crystal states in an iron-based, high-temperature superconductor is another step toward understanding superconductivity and using it in such applications as power transmission. (more…)
Science & Technology - Nov 18, 2009 12:55 - 2 Comments
Marveling over ‘molecular chicken wire’
VANDERBILT (US)—The hottest, thinnest, toughest new material in physics and nanotechnology is graphene: a remarkably flat molecule made of carbon atoms arranged in hexagonal rings much like molecular chicken wire. (more…)
Science & Technology - Aug 31, 2009 11:06 - 0 Comments
Dancing with high-temp superconductors
A computer-generated representation of the data obtained by scanning a cuprate superconductor in sub-atomic steps. Each cross represents a “Cooper pair” of electrons. At a temperature below 37K (bottom sheet) the pairs are in an orderly arrangement and current can flow without resistance. At a higher temperature the Cooper pairs are still present, but no longer orderly. (Credit: Jhinhwan Lee/Davis Group/Cornell University)
