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Yttrium hydrogen compound should be room temperature superconductor when under extreme pressure

•, brian wang

A collaboration between the University of Cambridge and Jilin University has published the results of a computational search for materials that might superconduct at even higher temperatures.

An extensive search for the stable structures and compositions of rare earth hydrides was performed using first principles density functional theory based methods. The superconducting transition temperatures for the stable metallic compounds were calculated using the same theoretical techniques that were used to anticipate the superconductivity in dense hydrogen sulphide. The highest temperatures were predicted for pressures that are around those found in the center of the Earth. It is a challenge for the future to find materials that superconduct at high temperatures and everyday low pressures.

Physical Review Letters – Hydrogen Clathrate Structures in Rare Earth Hydrides at High Pressures: Possible Route to Room-Temperature Superconductivity

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