Featured Research

from universities, journals, and other organizations

Secrets Behind High Temperature Superconductors Revealed

Date:
March 3, 2009
Source:
Queen Mary, University of London
Summary:
Scientists have found evidence that magnetism is involved in the mechanism behind high temperature superconductivity.

Scientists from Queen Mary, University of London and the University of Fribourg (Switzerland) have found evidence that magnetism is involved in the mechanism behind high temperature superconductivity.

Writing in the journal Nature Materials, Dr Alan Drew from Queen Mary's Department of Physics and his colleagues at the University of Fribourg report on the investigation of a new high temperature superconductor, the so-called oxypnictides. They found that these exhibit some striking similarities with the previously known copper-oxide high temperature superconductors - in both cases superconductivity emerges from a magnetic state. Their results go some way to explaining the mechanisms behind high temperature superconductors.

Superconductors are materials that can conduct electricity with no resistance, but only at low temperatures. High temperature superconductors were first discovered in 1986 in copper-oxides, which increased the operational temperature of superconductors by more than 100C, to -130C and opened up a wealth of applications. The complex fundamental physics behind these high temperature superconductors has, however, remained a mystery to scientists.

Dr Drew said "Last year, a new class of high-temperature superconductor was discovered that has a completely different make-up to the ones previously known - containing layers of Arsenic and Iron instead of layers of Copper and Oxygen. Our hope is that by studying them both together, we may be able to resolve the underlying physics behind both types of superconductor and design new superconducting materials, which may eventually lead to even higher temperature superconductors."

Professor Bernhard, of the University of Fribourg, added: "Despite the mysteries of high-temperature superconductivity, their applications are wide-ranging. One exciting applications is using superconducting wire to provide lossless power transmission from power stations to cities. Superconducting wire can hold a much higher current density than existing copper wire and is lossless and therefore energy saving."

An electrical current flowing round a loop of superconducting wire can also continue indefinitely, producing some of the most powerful electromagnets known to man. These magnets are used in MRI scanners, to 'float' the MagLev train, and to steer the proton beam of the Large Hadron Collider (LHC) at CERN. Envisaged future applications of superconductors exist also in ultrafast electronic devices and in quantum computing.


Story Source:

The above story is based on materials provided by Queen Mary, University of London. Note: Materials may be edited for content and length.


Cite This Page:

Queen Mary, University of London. "Secrets Behind High Temperature Superconductors Revealed." ScienceDaily. ScienceDaily, 3 March 2009. <www.sciencedaily.com/releases/2009/02/090222142137.htm>.
Queen Mary, University of London. (2009, March 3). Secrets Behind High Temperature Superconductors Revealed. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2009/02/090222142137.htm
Queen Mary, University of London. "Secrets Behind High Temperature Superconductors Revealed." ScienceDaily. www.sciencedaily.com/releases/2009/02/090222142137.htm (accessed April 16, 2014).

Share This



More Matter & Energy News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Google Patents Contact Lens Cameras; Internet Is Wary

Google Patents Contact Lens Cameras; Internet Is Wary

Newsy (Apr. 15, 2014) Google has filed for a patent to develop contact lenses capable of taking photos. The company describes possible benefits to blind people. Video provided by Newsy
Powered by NewsLook.com
The Walking, Talking Oil-Drigging Rig

The Walking, Talking Oil-Drigging Rig

Reuters - Business Video Online (Apr. 15, 2014) Pennsylvania-based Schramm is incorporating modern technology in its next generation oil-drigging rigs, making them smaller, safer and smarter. Ernest Scheyder reports. Video provided by Reuters
Powered by NewsLook.com
Dutch Highway Introduces Glow-In-The-Dark Paint

Dutch Highway Introduces Glow-In-The-Dark Paint

Newsy (Apr. 14, 2014) A Dutch highway has become the first lit by glow-in-the-dark paint — a project aimed at reducing street light use. Video provided by Newsy
Powered by NewsLook.com
Google Buys Drone Maker, Hopes to Connect Rural World

Google Buys Drone Maker, Hopes to Connect Rural World

Newsy (Apr. 14, 2014) Formerly courted by Facebook, Titan Aerospace will become a part of Google's quest to blanket the world in Internet connectivity. 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.

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