"A team of scientists from the Physics Department of Southeast University, a top university in Nanjing, China, have reported measuring 0 resistance in a samp...
110K (-163C, -262F) is still a significant improvement in cryo temperatures required for superconductivity. It no longer requires liquid helium temperatures for things like MRI magnets. So even if this is not a “holy grail” room temperature SC- it still enables the use of much cheaper commodity cryogenics like liquid nitrogen for use in scientific and industrial superconductors.
110K (-163C, -262F) is still a significant improvement in cryo temperatures required for superconductivity. It no longer requires liquid helium temperatures for things like MRI magnets. So even if this is not a “holy grail” room temperature SC- it still enables the use of much cheaper commodity cryogenics like liquid nitrogen for use in scientific and industrial superconductors.
It still loses to HgBa2Ca2Cu3O8+6 with Tc = 133–138 K at normal air pressure, though. (I assume it’s normal air presure as the article doesn’t say the pressure for it, while it refers to some others as high-pressure ones.)
Maybe LK-99 still has other benefits, such as not using mercury.