I meant the original paper, the above there is some sciencist in a chinese university replicating the paper.
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bro don't have original paper. but will share on forum if i get access.
The Huazhong University of Science and Technology has not in any way, shape, or form verified that LK-99 is a room-temperature, ambient-pressure superconductor. They have only shown that LK-99 is diamagnetic. That's it.
Unfortunately, there is a lot of fake news on Twitter.
thanks for the correction.
i m still looking for original paper of this information..
No problem. So far, there have been eight attempts to verify the results of the original paper (four in China, one in India, one in France, two in the USA). Five of them, including the one at the Huazhong University of Science and Technology, ended in failure and the status of the other three are unknown.
what about South Korea ..
The original paper is from South Korea. However, the results of that paper must be verified by others before they can be accepted as the truth. I am currently a graduate student (to protect my identity from lurkers, I won't mention the field) and my colleagues (including a professor at Seoul National University) recently told me that they believe that the original paper is either fraudulent or the authors of that paper lack the knowledge needed to correctly identify a superconductor.
I believe one thing they can definitively do to prove superconductivity is they can show a phase transition from a high conducting to lower conducting state as the external field increases.
0 resistance could just be due to insensitive instruments, levitation over magnets is just diamagnetism, but magnetic phase transitions from superconductive to resistive conduction is, AFAIK, a property only of superconductors.
And this is the biggest problem with this LK-99 hype. The most important data they need to prove it’s a superconductor is also the least conclusive in their paper.
Even if LK-99 proves to be a superconductor there are some considerations that should dial down the fervor over this discovery. First off the material may end up being very difficult to synthesize, especially if the recent paper simulating the material is correct about how specifically the doped copper ions need to be configured in the lead crystal lattice for the material to be a superconductor. Second, since this doesn’t seem to be a type II superconductor, it may not be usable as a superconducting magnet because the superconducting state might get disrupted by strong magnetic fields.
People should tap the brakes and adopt a more wait and see approach before announcing this as a big breakthrough imo. There’s just a lot of unanswered questions about this material right now, especially given how poorly put together the first papers were.
Above is a good compilation of all the attempts, their sources, and if they have failed or succeeded.