A controversial group of researchers say they have found a material that superconducts at room temperature and relatively low pressures.
Has the quest for room temperature superconductivity finally succeeded? Researchers at the University of Rochester , who previously were forced to retract a controversial claim of room temperature superconductivity at high pressures, are back with an even more spectacular claim. This week in—and not much more than ambient pressures.
, created by squeezing materials between the tips of two diamonds to millions of times atmospheric pressure. Scientists had made other hydrogen-rich superconductors, known as hydrides, but they had to be chilled to 250 K or lower. CSH superconducted at 287 K, the temperature of a wine fridge.and complained that the study’s recipe was vague and incomplete. Others found fault with the way the U of R group measured the material’s magnetic behavior, a key signature of superconductivity.
“This is the most detailed study of a hydride ever,” says Ashkan Salamat, a physicist at the University of Nevada, Las Vegas, and one of the study’s senior authors. Others agree the results look impressive. “It looks believable,” says Alexander Goncharov, a physicist at the Carnegie Institution for Science. “If it is correct, the paper is a tour de force using all the different techniques,” Hamlin says.
To solve the riddle, the U of R team “should do everything they can to help other groups reproduce it,” says Mikhail Eremets, a physicist at the Max Planck Institute for Chemistry, whose team discovered the first hydride superconductor in 2015 but failed to replicate the CSH results. “If they will not it will be a disaster.” But this level of cooperation doesn’t appear to be in the cards. Dias says Unearthly Materials, a company he and Salamat founded, is trying to commercialize the new hydride.
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