Superconductors news and discussions

[raklian]

Summary of the four replication efforts thus far.

So basically, LK-99 is interesting enough to open a new pathway to superconductor research, possibly towards the discovery of a bona fide room-temperature superconductor, but it is not the pancena a lot are claiming it to be.

Two biggest takeaways of note:

- LK-99 appears to retain its superconducting properties while the crystal lattice is not perfectly uniform or structured. It might explain why this occurs at ambient pressures.

- They concluded the appearance of diamagnetism without superconductivity seems unlikely, so the possibility of superconductivity at work is tantalizing.

[raklian]

They measure 0 resistance at 110K (-163C) using the four-point probe method. 0 resistance at this high of a temperature at ambient pressure is a new discovery in materials science

[spryfusion]

NYT article: https://archive.ph/E7yZQ

[spryfusion]

"Successful growth and room temperature ambient-pressure magnetic levitation of LK-99"

The paper would indicate they did not test for superconductivity. The replication evidence so far in conjunction with a few of the theoretical preprints imo leans towards isolated pockets of superconductivity within samples, not the entire sample being superconductive.

I imagine this makes it much harder to test and also explains why the successful levitation videos are usually near microscopic specks.

[spryfusion]

[wjfox]

Is anyone else remaining ultra-skeptical about this supposed "breakthrough", or is it just me?

One of my mottos in life – if it sounds too good to be true, it probably is.

Show me a peer-reviewed, published article in a top-tier journal like Nature or Science, confirming the effect and its reproducibility, and then I'll probably change my mind. Until then, it just seems to be pre-prints, rushed lab experiments, and Twitter speculation. We've seen this kind of thing before in other science/tech, where it ends in disappointment.

We weren't supposed to get this technology until ~2100...

[spryfusion]

Is anyone else remaining ultra-skeptical about this supposed "breakthrough", or is it just me?

One of my mottos in life – if it sounds too good to be true, it probably is.

Show me a peer-reviewed, published article in a top-tier journal like Nature or Science, confirming the effect and its reproducibility, and then I'll probably change my mind. Until then, it just seems to be pre-prints, rushed lab experiments, and Twitter speculation. We've seen this kind of thing before in other science/tech, where it ends in disappointment.

We weren't supposed to get this technology until ~2100...

Prediction markets have the odds that this is legit around ~40% right now. When the initial preprints came out, they only had the odds around 10-25%.

Update - 8/8/2023: It's back down to 23%.

Update - 8/9/2023: Down to 11%. It's basically over.

[Cyber_Rebel]

We weren't supposed to get this technology until ~2100...

Well, we were supposed to have civilization changing A.I. till much later as well. Perhaps what we think of as advanced really isn't the moment someone simply figures out how something works.

Considering how much this has blown up recently, I really hope it's legit as can be, because it couldn't have been placed at a better time than now. It quite literally means a new industrial revolution if it can be replicated at scale. If this affects computing power like it's theorized to, the Singularity is all but guaranteed.

[raklian]

[spryfusion]

Video source: https://www.douyin.com/video/7263715495256378659

[Powers]

Video source: https://www.douyin.com/video/7263715495256378659

I would wait for more footage.

[weatheriscool]

Taiwan University confirms LK-99 diamagnetism at room temperature.
Engineering

Taiwan University is live streaming now.

Here's the link:


They confirmed that LK-99 exhibits diamagnetism at around 1 hour and 10 minutes in the stream.

[firestar464]

https://www.science.org/content/article ... e-doubtful

Experts are pressing "x to doubt" on the Korean team's claims

We'll see within a week.

A week later, results have come up short.

https://www.nature.com/articles/d41586-023-02481-0

Ah well.

[Cyber_Rebel]

It's not Joever just yet, but yes, a peer reviewed paper and published by a highly reputable source would be much appreciated.

I also hope this doesn't kill disinterest in the hypothetical breakthrough itself, as at the very least it could lead to a true SC sometime down the line.

[Powers]

It's not Joever just yet, but yes, a peer reviewed paper and published by a highly reputable source would be much appreciated.

I hope it doesn't take a year .

[wjfox]

[firestar464]

[firestar464]

On a less flashy note

https://phys.org/news/2023-08-physicist ... ivity.html

[weatheriscool]

Korea University Confirms the Crystal Structure of LK-99 Matches Original Paper And Sample Passes Purity, Uniformity Standards
August 8, 2023 by Brian Wang
https://www.nextbigfuture.com/2023/08/k ... dards.html

Researchers at Korea University of Energy and Technology confirmed that the crystal structure of a sample of ‘LK-99’, proposed room temperature superconductor, is the same as the crystal structure presented in the original papers by Sukbae Lee, Jihoon Kim et al. The College of Energy Engineering is the only external institution conducting research after receiving samples of LK-99 from the Quantum Energy Research Institute.

A researcher at Korea Energy Engineering University, who is participating in the LK-99 study, said in a phone call with the Digital Times on the 8th, “As a result of analyzing the X-ray diffraction structure of the sample, it was confirmed that the fine crystal structure of the sample is the same as that presented in the paper.” said.

The researcher said, “If you look at the microcrystalline structure, you can estimate the possibility even if you cannot confirm the physical properties of the material. As a result of confirming the microcrystalline structure with X-rays for the analysis of LK-99, the Quantum Energy Research Institute has a different crystal structure and The crystal structure confirmed in the sample was the same,” he said.

[spryfusion]

"First order transition in Pb10-xCux(PO4)6O (0.9<x<1.1) containing Cu2S"







It's pretty much over. Manifold has tanked to 13% in response to this paper. Still possible that the independent labs studying the original LK-99 samples confirm that they are RTSCs, but I'm not holding my breath.