Origin of correlated isolated flat bands in LK99
1–10 of 209 posts
Re: Origin of correlated isolated flat bands in LK99
#2"However, substitution on the other Pb(2) does
not appear to have such sought-after properties, despite
being the lower-energy substitution site. This result hints
to the synthesis challenge in obtaining Cu substituted on
the appropriate site for obtaining a bulk superconducting
sample"
OK I'm starting to actually believe that LK-99 might be the real deal.
Re: Origin of correlated isolated flat bands in LK99
#3Even if LK99 turns out to be a dud, it's proven that there's a great need and great opportunity for more direct communication from scientist on their experiments via the internet. Live Stream of the Synthesis, Twitter Threads giving life updates of different teams, etc.
Re: Origin of correlated isolated flat bands in LK99
#4[deleted]
Re: Origin of correlated isolated flat bands in LK99
#5This paper is by someone from Lawrence Berkeley National Laboratory, who has run some simulations of LK99 and found features that are associated with high temperature superconductors.
In the last paragraph before acknowledgements, they point to a feature that could make synthesis difficult, then conclude with "Nevertheless, I expect the identification of this new material class to spur on further investigations of doped apatite minerals given these tantalizing theoretical signatures and experimental reports of possible high-TC superconductivity."
(I'm a high school dropout, worked for a physics project once)
Re: Origin of correlated isolated flat bands in LK99
#6Even if LK99 turns out to be a dud, it's proven that there's a great need and great opportunity for more direct communication from scientist on their experiments via the internet. Live Stream of the Synthesis, Twitter Threads giving life updates of different teams, etc.
I fully agree that the traditional journal and academic publishing models are having significant negative impact on the conduct of science. I also really like that the Arxiv, open access publishing, open peer review, live science and similar new models represent a refreshing return to less gatekeeping, politics and institutional gamesmanship.
Based on the early successes shown by applying social media platforms like Twitter, Twitch, Discord, etc, to accelerating science, I hope we can evolve better tools and platforms which are equally open but even more suited to the exchange of scientific ideas, results, review and feedback.
Re: Origin of correlated isolated flat bands in LK99
#7Out of curiosity, since this seems like a real inflection point toward trending in that direction, if it becomes increasingly likely that LK-99 or similar material is indeed a high-TC superconductor, what will savvy people be positioning themselves to do? What are good investments? What companies will be started, or what will existing companies be pivoting toward?
Re: Origin of correlated isolated flat bands in LK99
#8"plain English" explanation: https://nitter.net/Andercot/status/1686215574177841152#m
Re: Origin of correlated isolated flat bands in LK99
#9Even if LK99 isn't the real deal, god has it been an exciting 2 weeks. Though I know absolutely nothing about material science, I have enjoyed the sheer enthusiasm and optimism the scientific community has shown. I feel like I'm part of something unique and special, something which could have only been achieved by the medium of accessible mass communication. The excitement here is palpable. I feel fortunate to be part of this infinitesimally miniscule portion of human history where I can share this moment with so many people.
Re: Origin of correlated isolated flat bands in LK99
#10Man, I'm feeling stronger about LK-99 being it. This paper is theoretical and she finds that particular Cu substitutions onto specific Pb atomic sites are key to enabling a band structure that is usually linked to high Tc superconductors.
What this means for the more practical minded is that the synthesis of superconducting LK-99 is not trivial and you need to make the appropriate substitutional alloy for this to work.
This is a DFT paper, and a band structure that is usually seen in high Tc superconductors just naturally came out. She also talks about the strong electron-phonon coupling that naturally arose from the structure, which is always necessary for superconductivity.
I am, by far, the most excited I've ever been about this being a RT, ambient pressure superconductor.