Superconducting ScH3 and LuH3 at Megabar Pressures,Inorganic Chemistry

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Superconducting ScH3 and LuH3 at Megabar Pressures
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-09-30 , DOI: 10.1021/acs.inorgchem.1c01960
Mengyao Shao ₁ , Su Chen ₁ , Wuhao Chen ₁ , Kexin Zhang , Xiaoli Huang ₁ , Tian Cui _{1,

2}

Affiliation

Rare-earth (RE) superhydrides have great potential as high-temperature superconductors, with recent discoveries almost achieving room-temperature superconductivity in compressed LaH₁₀ and YH₉. Here, we continue to study the rare-earth hydrides by focusing on the new hydrides that the lightest element Sc and the heaviest element Lu formed under pressure. Two new superconducting hydrides ScH₃ (T_c ∼ 18.5 K at 131 GPa) and LuH₃ (T_c ∼ 12.4 K at 122 GPa) have been identified both with cubic structure by combining X-ray diffraction and electrical resistance techniques. Among all of the REH₃, only the superconducting properties of ScH₃ and LuH₃ have been experimentally confirmed. Our current results may offer guidance to other REH₃, which were predicted to be superconductors but have not been experimentally confirmed.

中文翻译：

在兆巴压力下超导 ScH3 和 LuH3

稀土 (RE) 超氢化物作为高温超导体具有巨大的潜力，最近的发现几乎在压缩的 LaH ₁₀和 YH _{9 中}实现了室温超导。在这里，我们继续研究稀土氢化物，重点关注最轻元素 Sc 和最重元素 Lu 在压力下形成的新氢化物。通过结合 X 射线衍射和电阻技术，两种新的超导氢化物 ScH ₃ ( T _c ∼ 18.5 K at 131 GPa) 和 LuH ₃ ( T _c ∼ 12.4 K at 122 GPa) 均具有立方结构。在所有的 REH _{3 中}，只有 ScH 的超导特性₃和 LuH ₃已被实验证实。我们目前的结果可能为其他被预测为超导体但尚未得到实验证实的REH ₃提供指导。

更新日期：2021-10-18

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