Journal of Alloys and Compounds, volume 849, pages 156434

Near-room-temperature superconductivity of Mg/Ca substituted metal hexahydride under pressure

Sukmas Wiwittawin ¹

Tsuppayakorn Aek Prutthipong ¹

Pinsook Udomsilp ²

Bovornratanaraks T. ¹

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Extreme Conditions Physics Research Laboratory (ECPRL) and Physics of Energy Materials Research Unit (PEMRU), Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand |

Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand |

Publication type: Journal Article

Publication date: 2020-12-01

Elsevier

Journal: Journal of Alloys and Compounds

Quartile SCImago

Quartile WOS

Impact factor: 6.2

ISSN: 09258388

DOI: 10.1016/j.jallcom.2020.156434

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Materials Chemistry

Metals and Alloys

Mechanical Engineering

Mechanics of Materials

Abstract

Abstract A quest for room-temperature superconductors is undergoing rapid innovation due to the continuing proliferation of experimental and theoretical researches on high-pressure physics. Hydrogen-caged metal compounds have been proposed to promote high critical temperature superconductivity at pressures, providing a decent opportunity to investigate related phenomena at experimentally attainable pressures. This breakthrough is attributable to the uplifting key parameters, such as electron-phonon interaction and maximum phonon frequency, once thought to be limited, by utilising high pressures. A large class of metal polyhydrides has been theoretically proposed and experimentally realised to promote near-room-temperature superconductivity under high pressures. In this work, we theoretically reported the near-room-temperature superconductivity in a symmetrically M g / C a substituted hexahydride, i.e. M g 0.5 C a 0.5 H 6 . We showed that this ternary M g 0.5 C a 0.5 H 6 compound adopts an I m 3 ¯ m structure, wherein a metal atom is embedded in a H 24 cage, is thermodynamically and dynamically stable at pressures ranging from 200 to 400 GPa. The analyses of the electronic band structure, Fermi surface topologies, phonon dispersion, and spectral function manifest strong support for superconductivity. We obtained λ = 2.53 and ω l o g = 1,400 K for our M g / C a substituted hexahydride at 200 GPa, exhibiting a near-room-temperature T c of 288 K, which completely exceeds the calculated T c of its parent compounds, i.e. M g H 6 and C a H 6 .

By date By citations

Citations by journals

	1 2 3 4
Physical Review B	Physical Review B, 4, 11.43% Physical Review B 4 publications, 11.43%
Journal of Physics Condensed Matter	Journal of Physics Condensed Matter, 3, 8.57% Journal of Physics Condensed Matter 3 publications, 8.57%
Journal of Physical Chemistry C	Journal of Physical Chemistry C, 3, 8.57% Journal of Physical Chemistry C 3 publications, 8.57%
Computational Materials Science	Computational Materials Science, 2, 5.71% Computational Materials Science 2 publications, 5.71%
Chemistry of Materials	Chemistry of Materials, 2, 5.71% Chemistry of Materials 2 publications, 5.71%
ACS Omega	ACS Omega, 2, 5.71% ACS Omega 2 publications, 5.71%
Physica B: Condensed Matter	Physica B: Condensed Matter, 2, 5.71% Physica B: Condensed Matter 2 publications, 5.71%
Materials Today	Materials Today, 1, 2.86% Materials Today 1 publication, 2.86%
Modern Physics Letters B	Modern Physics Letters B, 1, 2.86% Modern Physics Letters B 1 publication, 2.86%
Scientific Reports	Scientific Reports, 1, 2.86% Scientific Reports 1 publication, 2.86%
Nature Communications	Nature Communications, 1, 2.86% Nature Communications 1 publication, 2.86%
Journal of Superconductivity and Novel Magnetism	Journal of Superconductivity and Novel Magnetism, 1, 2.86% Journal of Superconductivity and Novel Magnetism 1 publication, 2.86%
Journal of Alloys and Compounds	Journal of Alloys and Compounds, 1, 2.86% Journal of Alloys and Compounds 1 publication, 2.86%
Chinese Journal of Physics	Chinese Journal of Physics, 1, 2.86% Chinese Journal of Physics 1 publication, 2.86%
Physica C: Superconductivity and its Applications	Physica C: Superconductivity and its Applications, 1, 2.86% Physica C: Superconductivity and its Applications 1 publication, 2.86%
International Journal of Hydrogen Energy	International Journal of Hydrogen Energy, 1, 2.86% International Journal of Hydrogen Energy 1 publication, 2.86%
Journal of Physics: Conference Series	Journal of Physics: Conference Series, 1, 2.86% Journal of Physics: Conference Series 1 publication, 2.86%
Frontiers of Physics	Frontiers of Physics, 1, 2.86% Frontiers of Physics 1 publication, 2.86%
Physics Letters, Section A: General, Atomic and Solid State Physics	Physics Letters, Section A: General, Atomic and Solid State Physics, 1, 2.86% Physics Letters, Section A: General, Atomic and Solid State Physics 1 publication, 2.86%
Wiley Interdisciplinary Reviews: Computational Molecular Science	Wiley Interdisciplinary Reviews: Computational Molecular Science, 1, 2.86% Wiley Interdisciplinary Reviews: Computational Molecular Science 1 publication, 2.86%
Advanced Theory and Simulations	Advanced Theory and Simulations, 1, 2.86% Advanced Theory and Simulations 1 publication, 2.86%
European Physical Journal B	European Physical Journal B, 1, 2.86% European Physical Journal B 1 publication, 2.86%
Physics-Uspekhi	Physics-Uspekhi, 1, 2.86% Physics-Uspekhi 1 publication, 2.86%
	1 2 3 4

Citations by publishers

	2 4 6 8 10
Elsevier	Elsevier, 10, 28.57% Elsevier 10 publications, 28.57%
American Chemical Society (ACS)	American Chemical Society (ACS), 7, 20% American Chemical Society (ACS) 7 publications, 20%
Springer Nature	Springer Nature, 5, 14.29% Springer Nature 5 publications, 14.29%
American Physical Society (APS)	American Physical Society (APS), 4, 11.43% American Physical Society (APS) 4 publications, 11.43%
IOP Publishing	IOP Publishing, 4, 11.43% IOP Publishing 4 publications, 11.43%
Wiley	Wiley, 2, 5.71% Wiley 2 publications, 5.71%
World Scientific	World Scientific, 1, 2.86% World Scientific 1 publication, 2.86%
Uspekhi Fizicheskikh Nauk Journal	Uspekhi Fizicheskikh Nauk Journal, 1, 2.86% Uspekhi Fizicheskikh Nauk Journal 1 publication, 2.86%
	2 4 6 8 10

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Sukmas W. et al. Near-room-temperature superconductivity of Mg/Ca substituted metal hexahydride under pressure // Journal of Alloys and Compounds. 2020. Vol. 849. p. 156434.

GOST all authors (up to 50) Copy

Sukmas W., Tsuppayakorn Aek P., Pinsook U., Bovornratanaraks T. Near-room-temperature superconductivity of Mg/Ca substituted metal hexahydride under pressure // Journal of Alloys and Compounds. 2020. Vol. 849. p. 156434.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1016/j.jallcom.2020.156434

UR - https://doi.org/10.1016%2Fj.jallcom.2020.156434

TI - Near-room-temperature superconductivity of Mg/Ca substituted metal hexahydride under pressure

T2 - Journal of Alloys and Compounds

AU - Sukmas, Wiwittawin

AU - Tsuppayakorn Aek, Prutthipong

AU - Pinsook, Udomsilp

AU - Bovornratanaraks, T.

PY - 2020

DA - 2020/12/01 00:00:00

PB - Elsevier

SP - 156434

VL - 849

SN - 0925-8388

ER -

BibTex

Cite this

BibTex Copy

@article{2020_Sukmas,

author = {Wiwittawin Sukmas and Prutthipong Tsuppayakorn Aek and Udomsilp Pinsook and T. Bovornratanaraks},

title = {Near-room-temperature superconductivity of Mg/Ca substituted metal hexahydride under pressure},

journal = {Journal of Alloys and Compounds},

year = {2020},

volume = {849},

publisher = {Elsevier},

month = {dec},

url = {https://doi.org/10.1016%2Fj.jallcom.2020.156434},

pages = {156434},

doi = {10.1016/j.jallcom.2020.156434}

}

Found error?

Publisher

Elsevier

Journal

Journal of Alloys and Compounds

Quartile SCImago

Quartile WOS

Impact factor

6.2

ISSN

09258388 (Print)