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Superconducting ternary hydrides:progress and challenges

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Since the discovery of the high-temperature superconductors H3S and LaH1o under high pressure,compressed hydrides have received extensive attention as promising candidates for room-temperature superconductors.As a result of current high-pressure theoretical and experimental studies,it is now known that almost all the binary hydrides with a high superconducting transition temperature(Tc)require extremely high pressure to remain stable,hindering any practical application.In order to further lower the stable pressure and improve superconductivity,researchers have started exploring ternary hydrides and had many achievements in recent years.Here,we discuss recent progress in ternary hydrides,aiming to deepen the understanding of the key factors regulating the structural stability and superconductivity of ternary hydrides,such as structural motifs,bonding features,electronic structures,electron-phonon coupling,etc.Furthermore,the current issues and challenges of superconducting ternary hydrides are presented,together with the prospects and opportunities for future research.

high pressureternary hydridesconventional superconductivityelectron-phonon coupling

Wendi Zhao、Xiaoli Huang、Zihan Zhang、Su Chen、Mingyang Du、Defang Duan、Tian Cui

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Institute of High Pressure Physics,School of Physical Science and Technology,Ningbo University,Ningbo 315211,China

State Key Laboratory of Super ha rd Materials,College of Physics,Jilin University,Changchun 130012,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProgram for Science and Technology Innovation Team in ZhejiangJilin Provincial Science and Technology Development Project

5207218812122405122741692021R0100420210509038RQ

2024

10.1093/nsr/nwad307

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ISSN：
年,卷(期)：2024.11(7)
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