Coexistence of superconductivity and magnetism

June 17, 2011

( -- Scientists from the University of Sydney are celebrating the 100th anniversary of superconductivity with a discovery of their own.

As part of an international collaboration, researchers from the University's Australian Centre for Microscopy and Microanalysis have identified a link between superconductivity and magnetism. Their results were published today in the international physics journal, Physical Review Letter.

Previously, superconductivity and magnetism have been considered to be 'at war' says Dr Wai Kong Yeoh, who led the effort around 'Probing Atoms to Understand the Coexistence of Superconductivity and Magnetism'.

Using a technique known as atom probe tomography, a cutting-edge that provides atom-by-atom map of a material, Dr Yeoh captured a which shows the structure of Fe-based superconductors. The image shows coexistence of magnetism and superconductivity, in which dopant atoms are observed forming nanoscale clusters. These clusters contain only a handful of atoms.

"Complementary advanced quantum-mechanics based simulations demonstrated that these clusters underpin the unique properties of this material.

Research towards establishing the interplay between these two states, that usually only coexist under very restricted conditions, has the potential to lead to exotic new or the development of advanced superconducting based devices, with application in nanoelectronics, or high-resolution magnetic measurement" says Dr Yeoh.

The results demonstrate the potential of this approach, combining characterisation and advanced simulations, to open new pathways to advance superconductor science.

Explore further: Secrets behind high temperature superconductors revealed

Related Stories

Secrets behind high temperature superconductors revealed

February 22, 2009

( -- 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.

Superconductors on the nanoscale

March 15, 2010

Superconductors, materials in which current flows without resistance, have tantalizing applications. But even the highest-temperature superconductors require extreme cooling before the effect kicks in, so researchers want ...

Many roads lead to superconductivity

September 10, 2010

Since their discovery in 2008, a new class of superconductors has precipitated a flood of research the world over. Unlike the previously familiar copper ceramics (cuprates), the basic structure of this new class consists ...

Recommended for you

A quantum of light for materials science

December 1, 2015

Computer simulations that predict the light-induced change in the physical and chemical properties of complex systems, molecules, nanostructures and solids usually ignore the quantum nature of light. Scientists of the Max-Planck ...

Quantum dots used to convert infrared light to visible light

December 1, 2015

(—A team of researchers at MIT has succeeded in creating a double film coating that is able to convert infrared light at modest intensities into visible light. In their paper published in the journal Nature Photonics, ...

Test racetrack dipole magnet produces record 16 tesla field

November 30, 2015

A new world record has been broken by the CERN magnet group when their racetrack test magnet produced a 16.2 tesla (16.2T) peak field – nearly twice that produced by the current LHC dipoles and the highest ever for a dipole ...

1 comment

Adjust slider to filter visible comments by rank

Display comments: newest first

not rated yet Jul 13, 2011
since there is no flow of time in a true superconductive flow state .....and an off shoot of that, a coupled effect seems to be 'magnetic'..then....what it the third axis?

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.