Featured Research

from universities, journals, and other organizations

Higher-temperature superconductivity

February 20, 2011
Iowa State University
An Iowa State theoretical physicist recently described the latest ideas in high-temperature superconductivity.

An Iowa State theoretical physicist recently described the latest ideas in high-temperature superconductivity during the annual meeting of the American Association for the Advancement of Science Feb. 17-21 in Washington, D.C.

Jörg Schmalian, an Iowa State professor of physics and astronomy and an associate of the U.S. Department of Energy's Ames Laboratory, was part of a symposium addressing the 100-year history of superconductivity. The session, "Superconductivity: From 1911 to 2021," took place Feb. 19.

Superconductors are materials that conduct electricity without slowing electrons. For decades, superconductors would only work at temperatures approaching minus 425 degrees Fahrenheit. But advancements have raised that temperature to minus 190 degrees Fahrenheit.

Schmalian's talk, "Superconductivity Without Phonons: From Heavy Electrons to the Cuprates and Pnictides," addressed the microscopic mechanism of those higher-temperature, unconventional superconductors.

Schmalian said electrons in conventional superconductors interact with sound waves to overcome their mutual repulsion to produce frictionless electricity.

"But that doesn't work at higher temperatures," he said. "We have to replace sound waves with something else."

One candidate is magnetism. And a better understanding of how that might work could have implications for MRI scans and other technologies that rely on superconductors.

"We want to understand how we can design and understand these novel materials that will hopefully allow us to increase the temperature where superconducting happens," Schmalian said. "The dream is superconductivity at room temperatures."

Materials science collaborations

Iowa State University will also be mentioned in a symposium describing the Materials Digital Library Pathway, a multi-university collaboration for materials students, teachers and researchers. The collaboration is designed to offer resources that can connect materials research and teaching programs.

Krishna Rajan, an Iowa State professor of materials science and engineering and director of Iowa State's Institute for Combinatorial Discovery, said the idea was to build an Internet repository of data, simulation tools, virtual labs, teaching archives and other materials that could be used by students and teachers. The project was supported by the National Science Foundation and the National Science Digital Library.

"The Materials Digital Library project helped us showcase our work in materials informatics for materials discovery and design, to both researchers and educators," Rajan said. "It has been a good example of using cyberinfrastructure in materials science"

The presentation about the collaboration was part of a symposium about "Teaching and Learning in the Digital Age: Reliable Resources Across the Disciplines."

Laura Bartolo, professor and director of Kent State University's Center for Materials Informatics, spoke about the materials science collaboration.

Story Source:

The above story is based on materials provided by Iowa State University. Note: Materials may be edited for content and length.

Cite This Page:

Iowa State University. "Higher-temperature superconductivity." ScienceDaily. ScienceDaily, 20 February 2011. <www.sciencedaily.com/releases/2011/02/110220142801.htm>.
Iowa State University. (2011, February 20). Higher-temperature superconductivity. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/2011/02/110220142801.htm
Iowa State University. "Higher-temperature superconductivity." ScienceDaily. www.sciencedaily.com/releases/2011/02/110220142801.htm (accessed April 24, 2014).

Share This

More Matter & Energy News

Thursday, April 24, 2014

Featured Research

from universities, journals, and other organizations

Featured Videos

from AP, Reuters, AFP, and other news services

UN Joint Mission Starts Removing Landmines in Cyprus

UN Joint Mission Starts Removing Landmines in Cyprus

AFP (Apr. 23, 2014) — The UN mission in Cyprus (UNFICYP) led a mine clearance demonstration on Wednesday in the UN-controlled buffer zone where demining operations are being conducted near the Cypriot village of Mammari. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Air Force: $4.2B Saved from Grounding A-10s

Air Force: $4.2B Saved from Grounding A-10s

AP (Apr. 23, 2014) — Speaking about the future of the United States Air Force, Chief of Staff Gen. Mark Welsh says the choice to divest the A-10 fleet was logical and least impactful. (April 23) Video provided by AP
Powered by NewsLook.com
Jets Fuel Jump in Boeing's Revenue

Jets Fuel Jump in Boeing's Revenue

Reuters - Business Video Online (Apr. 23, 2014) — A sharp rise in revenue for commercial jets offset a decline in Boeing's defense business. And a big increase in deliveries lifted profitability. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Is North Korea Planning Nuclear Test #4?

Is North Korea Planning Nuclear Test #4?

Newsy (Apr. 22, 2014) — South Korean officials say North Korea is preparing to conduct another nuclear test, but is Pyongyang just bluffing this time? Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.


Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News


Free Subscriptions

Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile

Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?

Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins