ramana wrote: ↑02 Aug 2023 01:00
Amber G. wrote: ↑09 Mar 2023 01:19
A paper in Nature reports the discovery of a superconductor that operates at room temperatures and near-room pressures. ( FWIW: I am not convinced
- I have seen earlier "claims" by the same authors did not pan out and earlier papers were retracted )
There was lot of excitement in annual March meeting of APS. Of course, if it turns out to be a valid discovery it will be one of major breakthrough of the century.
Evidence of near-ambient superconductivity in a N-doped lutetium hydride
Looks like this is making the news with reports from South Korea and China replicating the Korean results.
AmberG, What is the physics of this room temp superconductor? You can go into deep physics for me. No problem.
- Ramana, Few comments:
1 - The above Nature article, is, IMO, quite different than the recent 'Korea results'. Recent Korean 'paper', IMO, as stated before, is quite sloppy. (Either the authors wrote about some ordinary thing they did not understand or is outright fraud)
No one I know is taking this Korea thing seriously.
2 - Roughly the 'high' temperature superconductivity is around liquid nitrogen temperature...( much better than liquid Helium etc.). but not room temperature. We (Physicists - general) understand this behavior pretty well. Recently (last 10 years or so), there have been many claims of superconductivity at ordinary room temperature but extremely high pressure (to be useful in engineering). I (and most other physicists) do not understand the theory or how it works as well as ordinary superconductors. Hopefully not too far in future someone will have good results (low temperature - say freezer) and reasonable pressure (practical)...if we understand the theory the progress would be faster, IMO.
3 - Various claims have been made in the past (including a few from India, where I have commented in Brf), some more credible than others, but extremely high pressure needed to see the results, make them, for the time being , hard to replicate by others.
4- India does have some world class condescended matter physicist/labs/Engineers and work is being done there.