An international group of scientists from China, Russia, Germany and USA discovered new uranium hydrides and identified their superconductivity. The results are published in Science Advances.
Many physicians and chemists have been exploring the subject of superconductivity – the ability of a material to lose resistance to current electricity at a certain temperature – for a long time. The materials under examination – such as aluminum, mercury and others – have superconductivity, but only at low temperatures.
The group of scientist found out that uranium can form polyhydrides that have superconductivity at high temperatures, but at certain pressures. This is the main problem: it is hard to create such a pressure. Exploring uranium, the scientists revealed that 5 hydrides have superconductivity. The highest-temperature superconductor is UH7.