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Synthesis of clathrate cerium superhydride CeH9 at 80-100 GPa with atomic hydrogen sublattice

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Salke, Nilesh P., Davari Esfahani, M. Mahdi, Zhang, Youjun, Kruglov, Ivan A., Zhou, Jianshi, Wang, Yaguo, Greenberg, Eran, Prakapenka, Vitali B., Liu, Jin, Oganov, Artem R., Lin, Jung-Fu·2019·Nature Communications
DOI 10.1038/s41467-019-12326-y
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Abstract

Hydrogen-rich superhydrides are believed to be very promising high-Tc superconductors. Recent experiments discovered superhydrides at very high pressures, e.g. FeH 5 at 130 GPa and LaH 10 at 170 GPa. With the motivation of discovering new hydrogen-rich high-Tc superconductors at lowest possible pressure, here we report the prediction and experimental synthesis of cerium superhydride CeH 9 at 80–100 GPa in the laser-heated diamond anvil cell coupled with synchrotron X-ray diffraction. Ab initio calculations were carried out to evaluate the detailed chemistry of the Ce-H system and to understand the structure, stability and superconductivity of CeH 9. CeH 9 crystallizes in a P63/mmc clathrate structure with a very dense 3-dimensional atomic hydrogen sublattice at 100 GPa. These findings shed a significant light on the search for superhydrides in close similarity with atomic hydrogen within a feasible pressure range. Discovery of superhydride CeH 9 provides a practical platform to further investigate and understand conventional superconductivity in hydrogen rich superhydrides.

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Metadata

Authors
Salke, N. P., Davari Esfahani, M. M., Zhang, Y., Kruglov, I. A., Zhou, J., Wang, Y., Greenberg, E., Prakapenka, V. B., Liu, J., Oganov, A. R., & Lin, J.-F.
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2019-10-01
Volume
10
Issue
1
Pages
4453-4453
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/s41467-019-12326-y
OpenAlex
W2922790815
Cited by
1,004
References
6
FWCI
151.42
Type
journal article
Language
en
Open access
gold
Licence
Funders
DOD-ARMY grant

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CoChat. (2026). Citation check: Synthesis of clathrate cerium superhydride CeH9 at 80-100 GPa with atomic hydrogen sublattice. https://app.cochat.ai/papers/10.1038/s41467-019-12326-y
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Salke, N. P., Davari Esfahani, M. M., Zhang, Y., Kruglov, I. A., Zhou, J., Wang, Y., Greenberg, E., Prakapenka, V. B., Liu, J., Oganov, A. R., & Lin, J.-F. (2019). Synthesis of clathrate cerium superhydride CeH9 at 80-100 GPa with atomic hydrogen sublattice. Nature Communications. https://doi.org/10.1038/s41467-019-12326-y

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