In the experiment, iron-based superconductors are illuminated with X-ray light from the SLS. The light excites a spin wave in the sample and consequently loses energy. By comparing the energy of the incoming and the outgoing light, one can deduce information on magnetic fluctuations. (Graphic: Paul Scherrer Institute/Markus Fischer)
Media Releases Matter and Material Research Using Synchrotron Light PSI-Scientists demonstrate: Magnetic interactions are of fundamental importance for iron-based high-temperature superconductors For a long time, scientists and engineers have longed for a material that would conduct electricity at room temperature without any losses. More than 25 years ago scientists first discovered materials that were superconducting at relatively high temperatures: the cuprate-superconductors (copper-based superconductors). Iron-based high-temperature superconductors - a new class of materials discovered only a few years ago - also have this property. Together with Chinese and German collaborators, scientists at the Paul Scherrer Institute in Villigen (Switzerland) have now gained new insights into these superconductors. The experimental results indicate that magnetic interactions are of fundamental importance in the phenomenon of high-temperature superconductivity. This knowledge could contribute to the development of superconductors with improved technical properties in the future. The results have been published in Nature .
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