Featured Research

from universities, journals, and other organizations

Higher-temperature superconductivity

Date:
February 20, 2011
Source:
Iowa State University
Summary:
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 September 21, 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 September 21, 2014).

Share This



More Matter & Energy News

Sunday, September 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

What This MIT Sensor Could Mean For The Future Of Robotics

What This MIT Sensor Could Mean For The Future Of Robotics

Newsy (Sep. 20, 2014) — MIT researchers developed a light-based sensor that gives robots 100 times the sensitivity of a human finger, allowing for "unprecedented dexterity." Video provided by Newsy
Powered by NewsLook.com
MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) — The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) — Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) — Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
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.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

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