This appears to be a great result.
"Room temperature" super conductor result? No.
But this is basically showing there is some superconductivity in the sample, and cooler temperatures expose intrinsic band structures.
Pretty exciting!
LK-99: Team of Southeast University observed zero resistance below 110 K
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Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#42That's a failed repro then right? Below 110K is below -163.15 Celcius How would that compare to other superconductors?
technically a failure, but still a strange result
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#43That's a failed repro then right? Below 110K is below -163.15 Celcius How would that compare to other superconductors?
It is and it isn't. It's at ambient pressure (which is something useful), and there is something very odd happening much higher up that needs to be explained. They say their sample purity is higher than the one the Korean team had, so that would normally lead to better yield and easier confirmation of the superconductivity. But since it does show the Meissner effect in other samples as well at room temperature there…
perhaps an impurity caused the effect they're looking for
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#44credibility of LK99 claims is very very high. What are the medium term practical implications for all these potential applications?
What do you mean? If it's only a superconductor below 110K, that's not nearly as significant.
Yes, that's what one team now says: that they have observed super conductivity and that this happens at a much lower temperature than the one claimed by the other team. But it is at ambient pressure and more importantly there are already multiple confirmations of the Meissner effect at room temperature. Besides that this experiment shows some really weird stuff happening at higher temperatures that needs to be explained.
So this race is far from run yet.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#45Read the graph, there is a sharp drop in resistance from 220K-250K. Its still not superconducting but it could be hinting something?
That’s what I was thinking. In the video he brushes it off as a potential equipment malfunction, but perhaps it’s the effect everyone is looking for.
I'm really curious what the eventual explanation of this is and whether other teams will observe this happening as well.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#46credibility of LK99 claims is very very high. What are the medium term practical implications for all these potential applications?
It seems more and more like it's credible, but that synthesis is going to prove to be the issue. All these repro attempts are having too much success for there to be nothing behind the team's claims.
Can you explain why -160c is a measure of success when the claim was room temperature? A super conductor functioning at -160c would make MRIs simpler, but it's not world changing.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#47Earlier quoted context omitted.
It’s possible there are tiny bits of superconducting stuff at room temperature which connect into bigger and bigger bits as temperature drops, until it starts working as a whole at 110K. Maybe. Don’t quote me.
That would suggest that a very high quality sample would superconduct at room temperature.
Not necessarily, but possibly.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#48> below 110 K It is not room temperature, is it?
Room temp is 300K. Liquid nitrogen boils at 77K, though.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#49credibility of LK99 claims is very very high. What are the medium term practical implications for all these potential applications?
increased geopolitical tension
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#50There are multiple mentions of "extraterrestrial super islands", is this a mistranslation of the Meissner effect? Great term nonetheless.