The scientific journal Science re-explains the confusion and reproducibility of papers on ``superconductivity'' at normal temperature and pressure
On July 22, 2023, a paper was submitted on July 22, 2023 that overturns the conventional wisdom of ``realizing superconductivity even at room temperature'' on the phenomenon of ``superconductivity,'' in which the electrical resistance of a specific substance becomes 0 when cooled. Derek Lowe, an organic chemist and writer for the scientific journal Science, who previously commented on this paper, explains the reproducibility and confusion at the time of publication.
A Room-Temperature Superconductor? New Developments | Science | AAAS
On July 22, 2023, a paper was published on the preprint server arXiv that reproduced superconductivity, which should normally occur only in a cryogenic environment, in a normal temperature and normal pressure environment. Mr. Lowe confirmed this paper and explained in detail how the superconducting compound 'LK-99' was created.
The scientific journal Science explains a paper that synthesizes a substance that becomes ``superconducting'' at normal temperature and pressure-GIGAZINE
by Julien Bobroff
Mr. Rowe announced a new article, ``I will explain this rapidly changing topic as a continuation of the previous article.'' I mentioned again the astonishing claim that could overturn conventional wisdom.
Since the publication of the above paper, various research institutes have been working to reproduce superconductivity, but some have reported that they have failed completely, and it is not always possible to reproduce it. I know that. On the other hand, the Shenyang National Institute of Materials Science (SYNL) in South Korea and the Lawrence Berkeley National Laboratory in the United States have reported that they have 'succeeded in reproducing', and progress in future research is expected.
As of August 1, there was a report from China's Huazhong University of Science and Technology that LK-99 floated above a magnet due to the Meissner effect , indicating the possibility of room-temperature superconductivity. The authenticity of the video has not yet been confirmed. Two preprints submitted by SYNL and Lawrence Berkeley National Laboratory suggest that LK-99 may be an excellent superconductor based on density functional theory . Both studies focus on the electronic structure of the Fermi level , which plays an important role in superconductivity, but it has also been confirmed that there is variation in the behavior of LK-99.
Research results supporting the existence of the dream normal temperature and pressure superconductor ``LK-99'' will be announced one after another, and a video suggesting that the reproduced LK-99 is a superconducting substance is also released-GIGAZINE
``Even the original authors stated that the sample was polycrystalline and heterogeneous, so we cannot expect the preparation method reported in the paper to be an optimized one,'' Lowe said. It means that it may not go smoothly, but at the same time, it means that the chances of success increase when other people try it, ”he pointed out, and in the early stage of the announcement, the variable is an unknown quantity, and there will be good and bad results.
Another complication, Lowe points out, is the apparent infighting between preprint authors. 'Two' papers have been submitted this time, one of which was led by Mr. Lee Sukbae of the Quantum Energy Research Center, a research institute in South Korea, and Mr. Kim Jihoon and Mr. Kwon Yongwan. , The other is also led by Mr. Lee Sukbae, Mr. Kim Ji Hoon, Mr. Kim Hyung Tak, Mr. Lim Sung Yeon, Mr. Ahn Soo Min, and Mr. Ao Gun Ho. Regarding the publication of papers with similar content, Mr. Low speculated that ``I think it was because one of the authors submitted it without consulting the other authors.'' I can't blame anyone for the excitement and confusion of
“At this point, I am cautiously optimistic,” Rowe concluded. I am waiting for more reproduction data, but this is the most credible superconducting phenomenon at room temperature and pressure that the world has seen so far. 'The next few days and weeks will be very interesting.'
・Continued
About the normal temperature normal pressure superconductor ``LK-99'' reproduction experiment, Southeast University team announced that ``zero resistance'' was observed at minus 163 degrees - GIGAZINE
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