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arXiv 2303.01062cond-mat.supr-concond-mat.mtrl-scicond-mat.str-el
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致密钪中实现30 K以上超导电性

Superconductivity above 30 K achieved in dense scandium

Xin He, Changling Zhang, Zhiwen Li, Sijia Zhang, Shaomin Feng, Jianfa Zhao, Ke Lu, Baosen Min, Yi Peng, Xiancheng Wang, Jin Song, Luhong Wang, Saori I. Kawaguch… 展开作者

Xin He, Changling Zhang, Zhiwen Li, Sijia Zhang, Shaomin Feng, Jianfa Zhao, Ke Lu, Baosen Min, Yi Peng, Xiancheng Wang, Jin Song, Luhong Wang, Saori I. Kawaguchi, Cheng Ji, Bing Li, Haozhe Liu, J. S. Tse, Changqing Jin

AI总结:

实验发现致密钪在约283 GPa下Tc突破30 K,成为首个Tc达30 K范围的元素超导体,且未饱和,预示更高压力下Tc可进一步提升。

摘要:

超导电性是最引人入胜的量子现象之一,而寻找具有高临界温度(Tc)的元素超导体具有重大的科学意义,因为其材料组成相对简单且机理较为清晰。在此,我们报告了致密压缩钪(Sc)的实验发现,它成为首个Tc突破30 K范围的元素超导体,其Tc值与经典的La-Ba-Cu-O或LaFeAsO超导体相当。我们的结果表明,Sc的Tconset从约43 GPa时的约3 K升高到约283 GPa时的约32 K(Tczero约31 K),远高于液氖温度。有趣的是,在实验达到的最大压力下,测得的Tc没有饱和迹象,这表明进一步压缩可能使Tc更高。

英文摘要:

Superconductivity is one of most intriguing quantum phenomena, and the quest for elemental superconductors with high critical temperature (Tc) is of great scientific significance due to their relatively simple material composition and the underlying mechanism. Here we report the experimental discovery of densely compressed scandium (Sc) becoming the first elemental superconductor with Tc breaking into 30 K range, which is comparable to the Tc values of the classic La-Ba-Cu-O or LaFeAsO superconductors. Our results show that Tconset of Sc increases from ~3 K at around 43 GPa to ~32 K at about 283 GPa (Tczero ~ 31 K), which is well above liquid neon temperature. Interestingly measured Tc shows no sign of saturation up to the maximum pressure achieved in our experiments, indicating that Tc might be even higher upon further compression.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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