Ferromagnetic half levitation of LK-99-like synthetic samples
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Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#2> We argue that, together with the pronounced shape anisotropy of the small fragments, the soft ferromagnetism is sufficient to explain the observed half levitation in strong vertical magnetic fields. Our measurements do not indicate the presence of the Meissner effect, nor zero resistance, in our samples, leading us to believe that our samples do not exhibit superconductivity.
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#3So a completely different compound in a completely different shape.
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#4After reading the r/physics thread on LK-99 [1] I've cooled significantly on the matter.
Basically: people who work in SC think the initial science seems very sloppy and the replication attempts don't come close to what you need to demonstrate a RT SC
[1] https://www.reddit.com/r/Physics/comments/15i3h9d/lk99_megat...
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#5So a completely different compound in a completely different shape.
Still helpful. Now people know this synthesis process and result doesn't have this desired property and the 900 other groups working on this don't need to repeat it.
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#6So a completely different compound in a completely different shape.
The XRDs are nearly identical. It's a dead horse.
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#7My main concern: Where are the original authors and why are they not helping people synthesize the replications?
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#8Has anyone even seen a ferromagnet stand up like that in a magnetic field?
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#9After reading the r/physics thread on LK-99 [1] I've cooled significantly on the matter. Basically: people who work in SC think the initial science seems very sloppy and the replication attempts don't come close to what you need to demonstrate a RT SC [1] https://www.reddit.com/r/Physics/comments/15i3h9d/lk99_megat...
People were saying the initial papers were trash in the first day of their release over a week ago, so that's ancient history and immaterial now. Same with the "replications," they're obviously insufficient when they're generating pieces the size of a pin head that can't be attached to probes. All of us are in a holding pattern waiting for some big lab like Argonne to confirm or deny its SC status.
Re: Ferromagnetic half levitation of LK-99-like synthetic samples
#10Has anyone even seen a ferromagnet stand up like that in a magnetic field?
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.