Physical Review B
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Том 101
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Издание 2
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Номер публикации: 024508
Superconductivity of LaH10 and LaH16 polyhydrides
Kruglov I.A., Semenok D.V., Song H., Szczęśniak R., Wrona I.A., Akashi R., Davari Esfahani M.M., Duan D., Cui T., Kvashnin A.G., Oganov A.R.
Тип документа: Journal Article
Дата публикации: 2020-01-14
Название журнала: Physical Review B
Издатель: American Physical Society
Квартиль: Q1
ISSN: 24699950, 24699969, 10980121, 1550235X
Краткое описание
We explore high-pressure phase stability and superconductivity of lanthanum hydrides $LaH_m$ (m=4-11,16). We predict stability of a hitherto unreported polyhydride $P6/mmm$-$LaH_{16}$ at pressures above 150 GPa; at 200 GPa its predicted superconducting $T_C$ is 156 K, critical field $\mu_0$$H_C$(0) ~ 35 T and superconducting gap is up to 35 meV. We revisit superconductivity of the recently discovered $LaH_{10}$ and find its $T_C$ to be up to 259 K (170 GPa) from solving the Eliashberg equation and 271 K from solving the gap equation in SCDFT which also allowed us to compute the Coulomb pseudopotential $\mu^*$ for $LaH_{10}$ and $LaH_{16}$. Presence of several polymorph modifications of LaH10 may explain the variety in the experimentally measured $T_C$ values for $LaH_{10}$ [1,2]
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1. Kruglov I.A. и др. Superconductivity of
LaH10
and
LaH16
polyhydrides // Physical Review B. 2020. Т. 101. № 2.
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TY - JOUR
DO - 10.1103/physrevb.101.024508
UR - http://dx.doi.org/10.1103/PhysRevB.101.024508
TI - Superconductivity of
LaH10
and
LaH16
polyhydrides
T2 - Physical Review B
AU - Kruglov, Ivan A.
AU - Semenok, Dmitrii V.
AU - Song, Hao
AU - Szczęśniak, Radosław
AU - Wrona, Izabela A.
AU - Akashi, Ryosuke
AU - Davari Esfahani, M. Mahdi
AU - Duan, Defang
AU - Cui, Tian
AU - Kvashnin, Alexander G.
AU - Oganov, Artem R.
PY - 2020
DA - 2020/01/14
PB - American Physical Society (APS)
IS - 2
VL - 101
SN - 2469-9950
SN - 2469-9969
ER -
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@article{Kruglov_2020,
doi = {10.1103/physrevb.101.024508},
url = {https://doi.org/10.1103%2Fphysrevb.101.024508},
year = 2020,
month = {jan},
publisher = {American Physical Society ({APS})},
volume = {101},
number = {2},
author = {Ivan A. Kruglov and Dmitrii V. Semenok and Hao Song and Rados{\l}aw Szcz{\k{e}}{\'{s}}niak and Izabela A. Wrona and Ryosuke Akashi and M. Mahdi Davari Esfahani and Defang Duan and Tian Cui and Alexander G. Kvashnin and Artem R. Oganov},
title = {Superconductivity of
{LaH}10
and
{LaH}16
polyhydrides},
journal = {Physical Review B}
}
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Kruglov, Ivan A. et al. “Superconductivity of
LaH10
and
LaH16
Polyhydrides.” Physical Review B 101.2 (2020): n. pag. Crossref. Web.