This is the best summary I could come up with:
It was the second superconductor paper involving Ranga P. Dias, a professor of mechanical engineering and physics at the University of Rochester in New York State, to be retracted by the journal in just over a year.
In the Nature paper published in March, Dr. Dias and his colleagues reported that they had discovered a material — lutetium hydride with some nitrogen added — that was able to superconduct electricity at temperatures of up to 70 degrees Fahrenheit.
In August of this year, the journal Physical Review Letters retracted a 2021 paper by Dr. Dias that described intriguing electrical properties, although not superconductivity, in another chemical compound, manganese sulfide.
In May, Dr. Hamlin and Brad J. Ramshaw, a professor of physics at Cornell University, sent editors at Nature their concerns about the lutetium hydride data in the March paper.
In 2014, a group led by Mikhail Eremets, of the Max Planck Institute for Chemistry in Germany, showed that hydrogen-containing compounds are superconductors at surprisingly warm temperatures when squeezed under ultrahigh pressures.
Russell J. Hemley, a professor of physics and chemistry at the University of Illinois Chicago who followed up Dr. Eremets’s work with experiments that found another material that was also a superconductor at ultrahigh pressure conditions, continues to believe Dr. Dias’s lutetium hydride findings.
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