@humy saidIt is a crack in the quest for room temps though. I wonder what happens if they reduce the pressure and then go back to 170?
And the 250K figure mentioned in that link translates to -23.15C (although obviously they didn't measure it to that level of accuracy).
Here is a phys.org/news link to that;
https://phys.org/news/2019-05-scientists-highest-temperature-superconductor.html
@sonhouse saidWell the point is that you need the phase LaH10 which is only stable at extreme pressures. As soon as you release the pressure a hase transition takes place...
It is a crack in the quest for room temps though. I wonder what happens if they reduce the pressure and then go back to 170?