Conventional superconductivity can occur at much higher temperatures than previously expected, according to calculations made by an international team of physicists led by Matteo Calandra of the IMPMC Institute in Paris. The researchers have developed a theoretical model for the record high-temperature superconductivity reported last year in hydrogen sulphide, which the team says arises from relatively simple interactions similar to those underlying conventional low-temperature superconductors. This is different to other high-temperature materials in which the superconductivity is caused by complicated and poorly understood processes.
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