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Science advances, том 6, издание 9

Superconducting praseodymium superhydrides

Zhou Di 1
Duan Defang 1
Xie Hui 1
Chen Wuhao 1
Huang Xiaoli 1
Li Xin 1
Liu Bingbing 1
Oganov Artem R. 2, 3
Cui Tian 1, 4
1
 
State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China.
3
 
International Center for Materials Discovery, Northwestern Polytechnical University, Xi’an 710072, China.
4
 
School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
Тип документаJournal Article
Дата публикации2020-02-28
ИздательAmerican Association for the Advancement of Science
Название журналаScience advances
Квартиль по SCImagoQ1
Квартиль по Web of ScienceQ1
Импакт-фактор 202114.96
ISSN23752548
Multidisciplinary
Краткое описание
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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ГОСТ |
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1. Zhou D. и др. Superconducting praseodymium superhydrides // Science Advances. 2020. Т. 6. № 9.
RIS |
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TY - JOUR

DO - 10.1126/sciadv.aax6849

UR - http://dx.doi.org/10.1126/sciadv.aax6849

TI - Superconducting praseodymium superhydrides

T2 - Science Advances

AU - Zhou, Di

AU - Semenok, Dmitrii V.

AU - Duan, Defang

AU - Xie, Hui

AU - Chen, Wuhao

AU - Huang, Xiaoli

AU - Li, Xin

AU - Liu, Bingbing

AU - Oganov, Artem R.

AU - Cui, Tian

PY - 2020

DA - 2020/02/28

PB - American Association for the Advancement of Science (AAAS)

IS - 9

VL - 6

SN - 2375-2548

ER -

BibTex |
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@article{Zhou_2020,

doi = {10.1126/sciadv.aax6849},

url = {https://doi.org/10.1126%2Fsciadv.aax6849},

year = 2020,

month = {feb},

publisher = {American Association for the Advancement of Science ({AAAS})},

volume = {6},

number = {9},

author = {Di Zhou and Dmitrii V. Semenok and Defang Duan and Hui Xie and Wuhao Chen and Xiaoli Huang and Xin Li and Bingbing Liu and Artem R. Oganov and Tian Cui},

title = {Superconducting praseodymium superhydrides},

journal = {Science Advances}

}

MLA
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Zhou, Di, et al. “Superconducting Praseodymium Superhydrides.” Science Advances, vol. 6, no. 9, Feb. 2020. Crossref, https://doi.org/10.1126/sciadv.aax6849.