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https://www.nature.com/articles/d41586-023-02585-7
Nature今天發表了關於韓國LK-99 超導體的文章

文章標題:
LK-99 isn’t a superconductor — how science sleuths solved the mystery
LK-99 不是超導體- 科學偵探如何破解這個謎團

Researchers seem to have solved the puzzle of LK-99. Scientific detective work h
as unearthed evidence that the material is not a superconductor, and clarified i
ts actual properties.
研究人員似乎已經破解了LK-99之謎，科學探索的工作已然發現了這個材料不是超導體的證
據，並揭示了其實際的特性。

The conclusion dashes hopes that LK-99 — a compound of copper, lead, phosphorus
 and oxygen — marked the discovery of the first superconductor that works at ro
om temperature and ambient pressure. Instead, studies have shown that impurities
 in the material — in particular, copper sulfide — were responsible for the sh
arp drops in electrical resistivity and partial levitation over a magnet, which
looked similar to properties exhibited by superconductors.
這個結論讓LK-99(一種銅、鉛、磷和氧的化合物)是第一個在室溫常壓下工作的超導體的希
望破滅了。
研究表明，材料中的雜質(尤其是copper sulfide)會導致電阻劇烈下降和磁體上的部分懸浮
，這看起來與超導體的特性相似。

* 文章中只寫copper sulfide，但多個研究機構的論文裡有說是 硫化亞銅

“I think things are pretty decisively settled at this point,” says Inna Vishik
, a condensed-matter experimentalist at the University of California, Davis.
加州大學Davis分校的凝聚態實驗物理學家 Inna Vishik 表示：“我認為事情在此時已經相
當明瞭了。”

The LK-99 saga began in late July, when a team led by Sukbae Lee and Ji-Hoon Kim
 at the Quantum Energy Research Centre, a start-up firm in Seoul, published prep
rints1,2 claiming that LK-99 is a superconductor at normal pressure and temperat
ures up to at least 127 ºC (400 kelvin). All previously confirmed superconductor
s function only at extreme temperatures and pressures.


The extraordinary claim quickly grabbed the attention of the science-interested
public and researchers, some of whom tried to replicate LK-99. Initial attempts
did not see signs of room-temperature superconductivity, but were not conclusive
. Now, after dozens of replication efforts, many experts are confidently saying
that the evidence shows LK-99 is not a room-temperature superconductor. (Lee and
 Kim’s team did not respond to Nature’s request for comment.)



...... 接下去就是世界各國的研究機構的論文整理，懶的全部翻譯了，有興趣可以自己到
網站上看


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※ 作者: kkm99 2023-08-17 13:22:54
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