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Superconductivity ‘damaged’ as researchers look to move on from retractions
“I’m going to introduce a new material for the first time.” So said the condensed-matter physicist Ranga Dias to a packed conference room at the March meeting of the American Physical Society in Las Vegas earlier this year. The material in question was nitrogen-doped lutetium hydride, or Lu-N-H, and Dias went on to describe measurements claiming to have seen evidence for superconductivity at a remarkable 294 K (a balmy 20 °C) under a pressure of 1 GPa (10 kbar).Based at the University of Rochester in the US, Dias claimed to have observed many signatures of superconductivity such as the electrical resistance dropping to zero at a particular transition temperature and the material expelling magnetic field lines. He and his colleagues also measured the sample’s specific heat, which showed a characteristic response at the transition temperature.
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Superconductivity 'damaged' as researchers look to move on from retractions – Physics World
Recent retractions and allegations of scientific misconduct have hampered progress in the field
physicsworld.com