Open Access
Open access
Science advances, volume 6, issue 9

Superconducting praseodymium superhydrides

Publication typeJournal Article
Publication date2020-02-28
Journal: Science advances
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor13.6
ISSN23752548
Multidisciplinary
Abstract
We have successfully realized the synthesis and superconductivity of praseodymium superhydrides above megabar pressures. Superhydrides have complex hydrogenic sublattices and are important prototypes for studying metallic hydrogen and high-temperature superconductors. Previous results for LaH10 suggest that the Pr-H system may be especially worth studying because of the magnetism and valence-band f-electrons in the element Pr. Here, we successfully synthesized praseodymium superhydrides (PrH9) in laser-heated diamond anvil cells. Synchrotron x-ray diffraction analysis demonstrated the presence of previously predicted F4¯3m-PrH9 and unexpected P63/mmc-PrH9 phases. Experimental studies of electrical resistance in the PrH9 sample showed the emergence of a possible superconducting transition (Tc) below 9 K and Tc dependent on the applied magnetic field. Theoretical calculations indicate that magnetic order and likely superconductivity coexist in a narrow range of pressures in the PrH9 sample, which may contribute to its low superconducting temperature. Our results highlight the intimate connections between hydrogenic sublattices, density of states, magnetism, and superconductivity in Pr-based superhydrides.

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GOST Copy
Zhou D. et al. Superconducting praseodymium superhydrides // Science advances. 2020. Vol. 6. No. 9.
GOST all authors (up to 50) Copy
Zhou D., Semenok D. V., Duan D., Xie H., Chen W., Huang X., Li X., Bingbing L., Oganov A. R., Cui T. Superconducting praseodymium superhydrides // Science advances. 2020. Vol. 6. No. 9.
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RIS Copy
TY - JOUR
DO - 10.1126/sciadv.aax6849
UR - https://doi.org/10.1126%2Fsciadv.aax6849
TI - Superconducting praseodymium superhydrides
T2 - Science advances
AU - Zhou, Di
AU - Semenok, Dmitry V.
AU - Duan, Defang
AU - Xie, Hui
AU - Chen, Wuhao
AU - Huang, Xiaoli
AU - Li, Xin
AU - Bingbing, LIU
AU - Oganov, A. R.
AU - Cui, Tian
PY - 2020
DA - 2020/02/28 00:00:00
PB - American Association for the Advancement of Science (AAAS)
IS - 9
VL - 6
PMID - 32158937
SN - 2375-2548
ER -
BibTex
Cite this
BibTex Copy
@article{2020_Zhou
author = {Di Zhou and Dmitry V. Semenok and Defang Duan and Hui Xie and Wuhao Chen and Xiaoli Huang and Xin Li and LIU Bingbing and A. R. Oganov and Tian Cui},
title = {Superconducting praseodymium superhydrides},
journal = {Science advances},
year = {2020},
volume = {6},
publisher = {American Association for the Advancement of Science (AAAS)},
month = {feb},
url = {https://doi.org/10.1126%2Fsciadv.aax6849},
number = {9},
doi = {10.1126/sciadv.aax6849}
}
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