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 документаJournal Article
Дата публикации2020-01-14
Название журналаPhysical Review B
ИздательAmerican Physical Society
КвартильQ1
ISSN24699950, 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.
RIS |
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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 -

BibTex |
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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}

}

MLA
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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.