Tag: superconductors

Scientists discover exotic magnetic structures in iron-based superconductors

January 29, 2016 Thomas Parisi Faculty & Staff, Latest News, Liberal Arts and Sciences, Research, Science and Technology

Scientists from NIU and Argonne National Laboratory are reporting this week in the journal Nature Physics on the discovery of exotic magnetic structures in iron-based superconductors. Superconductors exhibit amazing properties: When cooled below certain temperatures, they conduct electricity without energy-sapping resistance. But

$A neutron diffraction image giving evidence for the new magnetic phase in iron-based superconductors discovered by Argonne scientists. It shows the scattering results from a sample of barium iron arsenide with sodium ions added to 24 percent of the barium sites. Nematic order sets in below 90 K but four-fold symmetry is restored below 40 K. The resulting atomic and magnetic structures are illustrated in the figure on the right, in which the blue spheres represent iron atoms and the red arrows show the direction of their magnetic moments. Image by Jared Allred.$

Super(conducting) discovery

May 22, 2014 Thomas Parisi Faculty & Staff, Global, Latest News, Liberal Arts and Sciences, Research, Science and Technology, Students

Northern Illinois University physics professor Omar Chmaissem, an NIU alumnae and a current postdoctoral student are key members of a team of scientists at the U.S. Department of Energy’s Argonne National Laboratory shedding light this week on the mysteries of superconductivity. In

NIU.edu
NIUHuskies.com
MyNIU.com