Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Surprise superconductor

Superconductivity is a rare physical state in which matter is able to conduct electricity—maintain a flow of electrons—without any resistance.

This phenomenon can only be found in certain materials under specific low-temperature and high-pressure conditions. Research to create superconductors at higher temperatures has been ongoing for two decades with the promise of significant impact on electrical transmission.

New research from a team led by Choong-Shik Yoo at Washington State University—and including Carnegie's Viktor Struzhkin, Takaki Muramatsu, and Stanislav Sinogeikin—found unexpected superconductivity that could help scientists better understand the structural changes that create this rare phenomenon. Their work is published the week of July 1 by the Proceedings of the National Academy of Sciences.

The team found superconductivity in the solid form of a compound called carbon disulfide, CS2, which is sometimes used in liquid form as a chemical solvent or insecticide. They found that disulfide enters a superconducting state at about -449 degrees Fahrenheit (6.2 Kelvin) at pressures ranging from about 493,000 to about 1,698,000 times normal atmospheric pressure (50 to 172 gigapascals).

"What makes this discovery special is that it seems counter to the understanding of how superconductivity normally works," Yoo said.

Usually, but not always, superconductivity is present in highly ordered molecular structures. But in carbon disulfide, superconductivity arises from a highly disordered state, which is rare. Even more surprising, this disordered structure is preceded by a magnetically ordered state, which undergoes a structural change into the disorganized configuration when superconducting starts.

"These results show the interplay between superconductivity, magnetism and structural disorder," Struzhkin said. "We are already at work searching for other highly conducting states in similar molecular systems in close collaboration with Professor Choong-Shik Yoo's team."

The rest of the team was lead author Ranga Dias, and co-author Minseob Kim also of Washington State University; and co-authors Takahiro Matsuoka and Yasuo Ohishi of the Japan Synchrotron Radiation Research Institute.

This work was supported by the National Science Foundation-Division of Materials Research, the Defense Threat Reduction Agency, the Deep Carbon Observatory - Extreme Physics and Chemistry, and the Department of Energy/Basic Energy Science.

The Carnegie Institution for Science is a private, nonprofit organization headquartered in Washington, D.C., with six research departments throughout the U.S. Since its founding in 1902, the Carnegie Institution has been a pioneering force in basic scientific research. Carnegie scientists are leaders in plant biology, developmental biology, astronomy, materials science, global ecology, and Earth and planetary science.

Viktor Struzhkin | EurekAlert!
Further information:

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Tiny implants for cells are functional in vivo

For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.

In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

Im Focus: ILA 2018: Laser alternative to hexavalent chromium coating

At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.

When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

Latest News

A new kind of quantum bits in two dimensions

19.03.2018 | Physics and Astronomy

Scientists have a new way to gauge the growth of nanowires

19.03.2018 | Materials Sciences

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Science & Research
Overview of more VideoLinks >>>