The U.S. Department of Energy's Ames Laboratory has discovered and described the existence of a unique disordered electron spin state in a metal that may provide a unique pathway to finding and studying frustrated magnets.
Condensed matter physicists use the term "frustrated" to describe a kind of magnet in which the spins fail to align into stable magnetic order. In perfectly frustrated magnets called spin liquids, the disordered magnetism of these materials persists even at very low temperatures, and their unique properties are of interest in the development of quantum computing and high-temperature superconductivity.
The materials investigated to search for this perfectly frustrated magnetic state are typically insulators. But Ames Laboratory researchers were able to define a "perfectly frustrated" state in a metallic material, CaCo1.86As2.
"Perfectly frustrated systems, ones that really cannot resolve their magnetic states, are difficult to find in the first place, but even more so in a metal," said Rob McQueeney, scientist at Ames Laboratory.
Read more at: https://phys.org/news/2017-11-perfectly-frustrated-metal-path-superconductivity.html#jCp
The U.S. Department of Energy's Ames Laboratory has discovered and described the existence of a unique disordered electron spin state in a metal that may provide a unique pathway to finding and studying frustrated magnets.
Condensed matter physicists use the term "frustrated" to describe a kind of magnet in which the spins fail to align into stable magnetic order. In perfectly frustrated magnets called spin liquids, the disordered magnetism of these materials persists even at very low temperatures, and their unique properties are of interest in the development of quantum computing and high-temperature superconductivity.
The materials investigated to search for this perfectly frustrated magnetic state are typically insulators. But Ames Laboratory researchers were able to define a "perfectly frustrated" state in a metallic material, CaCo1.86As2.
"Perfectly frustrated systems, ones that really cannot resolve their magnetic states, are difficult to find in the first place, but even more so in a metal," said Rob McQueeney,scientist at Ames Laboratory.