Current Opinion in Solid State and Materials Science, volume 24, issue 2, pages 100808

On Distribution of Superconductivity in Metal Hydrides

Savkin Igor A 3
Oganov A. R. 4, 5, 6
Publication typeJournal Article
Publication date2020-04-07
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor11
ISSN13590286
General Materials Science
Abstract
Using the data on the superconducting critical temperature ($T_{C}$) for a number of metal hydrides, we found a rule that makes it possible to predict the maximum $T_{C}$ based only on the information about the electronic structure of metal atoms. Using this guiding principle, we explored the hydride systems for which no reliable information existed, predicted new higher hydrides in the K-H, Zr-H, Hf-H, Ti-H, Mg-H, Sr-H, Ba-H, Cs-H, and Rb-H systems at high pressures, and calculated their $T_{C}$. Results of the study of actinides and lanthanides show that they form highly symmetric superhydrides $XH_{7-9}$. However, actinide hydrides do not exhibit high-temperature superconductivity (except Th-H system) and might not be considered as promising materials for experimental studies, as well as all $d^m$-elements with m > 4, including metal hydrides of the noble elements. Designed neural network allowing the prediction of $T_{C}$ of various hydrides shows good accuracy and was used to estimate upper limit for $T_{C}$ of the materials with absence of the data. The developed rule, based on regular behavior of the maximum achievable critical temperature as a function of number of $d+f$ electrons, enables targeted predictions about the existence of new high-$T_{C}$ superconductors.

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Semenok D. V. et al. On Distribution of Superconductivity in Metal Hydrides // Current Opinion in Solid State and Materials Science. 2020. Vol. 24. No. 2. p. 100808.
GOST all authors (up to 50) Copy
Semenok D. V., Kruglov I. A., Savkin I. A., Kvashnin A. G., Oganov A. R. On Distribution of Superconductivity in Metal Hydrides // Current Opinion in Solid State and Materials Science. 2020. Vol. 24. No. 2. p. 100808.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.cossms.2020.100808
UR - https://doi.org/10.1016%2Fj.cossms.2020.100808
TI - On Distribution of Superconductivity in Metal Hydrides
T2 - Current Opinion in Solid State and Materials Science
AU - Semenok, Dmitry V.
AU - Kruglov, Ivan A.
AU - Savkin, Igor A
AU - Kvashnin, Alexander G.
AU - Oganov, A. R.
PY - 2020
DA - 2020/04/07 00:00:00
PB - Elsevier
SP - 100808
IS - 2
VL - 24
SN - 1359-0286
ER -
BibTex |
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BibTex Copy
@article{2020_Semenok,
author = {Dmitry V. Semenok and Ivan A. Kruglov and Igor A Savkin and Alexander G. Kvashnin and A. R. Oganov},
title = {On Distribution of Superconductivity in Metal Hydrides},
journal = {Current Opinion in Solid State and Materials Science},
year = {2020},
volume = {24},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016%2Fj.cossms.2020.100808},
number = {2},
pages = {100808},
doi = {10.1016/j.cossms.2020.100808}
}
MLA
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Semenok, Dmitry V., et al. “On Distribution of Superconductivity in Metal Hydrides.” Current Opinion in Solid State and Materials Science, vol. 24, no. 2, Apr. 2020, p. 100808. https://doi.org/10.1016%2Fj.cossms.2020.100808.
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