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Ferromagnetic half levitation of LK-99-like synthetic samples

arxiv.org

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Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#171

Post by hliyan »

mkagenius wrote: post #157
ThePhysicist wrote: post #142

Earlier quoted context omitted.

Maybe a cautionary reminder to not listen to random influencers on Twitter. The expert community was really silent and reserved from the beginning as they've seen such wonder materials many times. Having worked in that field for many years I'm personally skeptical that there ever will be an ambient-pressure, room-temperature superconductor. The band structure and interactions that need to be present in the material a…

Yes, I only listen to people with handle like "ThePhysicist" or "theMaterialPhyisicist" at hackernews.

[flagged]

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#172

Post by caeruleus »

carabiner wrote: post #124
throwawaymaths wrote: post #86

Earlier quoted context omitted.

Never claimed it was impossible, just that it's rare. > No one reputable I don't care about reputability of anyone unless they have a known past of fraud. Gatekeeping in science is lame unless someone makes a claim to break well understood theory or claims to do something technically difficult. RTSC is neither. Do you think this video is faked?: https://twitter.com/Andercot/status/1687740396691185664?s=20

The Chinese originator of that video has since admitted it's fake.

I believe you are referring to a different video: https://nitter.net/elsa17z/status/1688515729874673664#m (The one where the sample spins).

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#173

Post by Double_a_92 »

fnordpiglet wrote: post #36
versteegen wrote: post #10

Earlier quoted context omitted.

Yes. https://nitter.net/VanGennepD/status/1688052003216261120 And this new paper finally rigorously explains away all the half-levitation videos. They can no longer be considered any evidence of SC at all.

Not all the replication videos show the sample in the middle, see the Varda sample videos. Constructing something that simulates something else is proof of very little, other than there are other possible explanations. The existence of alternative explanations isn’t a proof the proposed explanation isn’t true. This paper doesn’t explain away anything yet - they’re conjecturing based on their experience with their sam…

> The existence of alternative explanations isn’t a proof the proposed explanation isn’t true.

But it's proof that the proposed explanation is not a bulletproof proof... Because it could also be any other alternative effect.

That's literally the whole point of it...

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#174

Post by ant6n »

carabiner wrote: post #148
ironborn123 wrote: post #132

Earlier quoted context omitted.

There are 2 things in favor of the Korean team - Hyun-Tak Kim is unlikely to ruin his career and legacy for something careless and frivolous. But stranger things have happened, so lets assign a 10% probability to give some benefit of doubt to the team. - The various DFT papers show interesting flat band structures. But DFT is an approximation and also they do not take into account electron electron correlations. So l…

I too like to assign probabilities to my vibes. Much more legitimate.

Common in tech: “95% of our users wont care if we make the product worse by…”

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#175

Post by lobochrome »

xyproto wrote: post #161
tw1984 wrote: post #151

Earlier quoted context omitted.

> Hyun-Tak Kim is unlikely to ruin his career and legacy for something careless and frivolous. you came with presumption that this man knows & understands the subject matter. that is a very bold assumption given the mounting evidence against such brief. > so lets assign a 10% probability why 10%? not 0.01%? because of his "prof." title or previous publications? Surely that won't change the course of nature I thought?…

> You seem to have some really wired brief here, get some help I say. I googled "wired brief" and this is what I found: https://www.ebay.ca/itm/303994118271

I swam those a lot.

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#176

Post by yieldcrv »

clmay wrote: post #112
tkzed49 wrote: post #108

Earlier quoted context omitted.

It could be the sheer volume of discussion. I've seen a lot of these posts and this is the first time I've read this question.

Maybe it's because I have been obsessively ensuring that I read every comment on every top thread... Some kind of selection bias could be at play...

I’ve been half assedly following this, not understanding a single word in the papers that keep coming out, not understanding the musings of enthusiasts and professionals

and it looks like I know just as much that its a nothing burger, with maybe some sliver of novelty

we dont have a superconductor, as expected

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#177

Post by ElFitz »

jldugger wrote: post #164
mkagenius wrote: post #157

Earlier quoted context omitted.

Yes, I only listen to people with handle like "ThePhysicist" or "theMaterialPhyisicist" at hackernews.

I think the point is you can probably ignore everyone who isn't giving a Nobel acceptance speech.

That’s why I personally only listen to the opinions of people with handles like "Planck54", "The1965PhysicsNobel" or "EconNobel94" on hackernews.

Sorry, I couldn’t resist.

N.B. I also tried to find some noteworthy Fields medal winner, but refrained since it appears I don’t know any of them, and that the committee’s choices and motivations have been subject to controversy [0].

[0]: https://www.science.org/content/article/fields-medal-was-nev...

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#178

Post by ThePhysicist »

hliyan wrote: post #171
mkagenius wrote: post #157

Earlier quoted context omitted.

Yes, I only listen to people with handle like "ThePhysicist" or "theMaterialPhyisicist" at hackernews.

[flagged]

FWIW I prefer to not use my real name in discussion threads here, although it is linked in my bio. So if you don't mind please remove it, thanks :)

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#179

Post by gilleain »

carabiner wrote: post #148
ironborn123 wrote: post #132

Earlier quoted context omitted.

There are 2 things in favor of the Korean team - Hyun-Tak Kim is unlikely to ruin his career and legacy for something careless and frivolous. But stranger things have happened, so lets assign a 10% probability to give some benefit of doubt to the team. - The various DFT papers show interesting flat band structures. But DFT is an approximation and also they do not take into account electron electron correlations. So l…

I too like to assign probabilities to my vibes. Much more legitimate.

Reminds me of how Data in Star Trek would say things like "There is a 79.85 probability of success".

I mean, maybe it is possible to assign probabilities to future events that you have never seen before, but somehow I doubt it (with 12.88% likelihood).

Re: Ferromagnetic half levitation of LK-99-like synthetic samples

#180

Post by Brotkrumen »

Smoosh wrote: post #169
NovaDudely wrote: post #37

Earlier quoted context omitted.

I have been very cautious on any analysis on LK99 - especially my own. I have mentioned to many people that any potential application of this stuff comes with an 'if it is real'. That IF is doing a lot of heavy lifting and it has to be emphasized. I want this to be a thing, but it doesn't matter how much you want something to be true, it actually HAS to be true. A beautiful elegant idea can be crushed by a single ugl…

As youtuber John Cadogan says "facts don't care about your feelings".

I personally go by "Carpe Diem", as musician Taylor Swift says.
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