Anomalous High‐Temperature Superconductivity in YH 6

Troyan I.A., Semenok D.V., Kvashnin A.G., Sadakov A.V., Sobolevskiy O.A., Pudalov V.M., Ivanova A.G., Prakapenka V.B., Greenberg E., Gavriliuk A.G., Lyubutin I.S., Struzhkin V.V., Bergara A., Errea I., Bianco R., Calandra M., Mauri F., Monacelli L., Akashi R., Oganov A.R.
Тип документаJournal Article
Дата публикации2021-03-10
Название журналаAdvanced Materials
ИздательWiley-Blackwell
КвартильQ1
ISSN09359648, 15214095
  • General Materials Science
  • Mechanical Engineering
  • Mechanics of Materials
Краткое описание
Pressure-stabilized hydrides are a new rapidly growing class of high-temperature superconductors, which is believed to be described within the conventional phonon-mediated mechanism of coupling. Here, the synthesis of one of the best-known high-TC superconductors-yttrium hexahydride I m 3 ¯ m -YH6 is reported, which displays a superconducting transition at ≈224 K at 166 GPa. The extrapolated upper critical magnetic field Bc2 (0) of YH6 is surprisingly high: 116-158 T, which is 2-2.5 times larger than the calculated value. A pronounced shift of TC in yttrium deuteride YD6 with the isotope coefficient 0.4 supports the phonon-assisted superconductivity. Current-voltage measurements show that the critical current IC and its density JC may exceed 1.75 A and 3500 A mm-2 at 4 K, respectively, which is higher than that of the commercial superconductors, such as NbTi and YBCO. The results of superconducting density functional theory (SCDFT) and anharmonic calculations, together with anomalously high critical magnetic field, suggest notable departures of the superconducting properties from the conventional Migdal-Eliashberg and Bardeen-Cooper-Schrieffer theories, and presence of an additional mechanism of superconductivity.
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1. Troyan I.A. и др. Anomalous High‐Temperature Superconductivity in YH 6 // Advanced Materials. 2021. Т. 33. № 15. С. 2006832.
RIS |
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TY - JOUR

DO - 10.1002/adma.202006832

UR - http://dx.doi.org/10.1002/adma.202006832

TI - Anomalous High‐Temperature Superconductivity in YH

6

T2 - Advanced Materials

AU - Troyan, Ivan A.

AU - Semenok, Dmitrii V.

AU - Kvashnin, Alexander G.

AU - Sadakov, Andrey V.

AU - Sobolevskiy, Oleg A.

AU - Pudalov, Vladimir M.

AU - Ivanova, Anna G.

AU - Prakapenka, Vitali B.

AU - Greenberg, Eran

AU - Gavriliuk, Alexander G.

AU - Lyubutin, Igor S.

AU - Struzhkin, Viktor V.

AU - Bergara, Aitor

AU - Errea, Ion

AU - Bianco, Raffaello

AU - Calandra, Matteo

AU - Mauri, Francesco

AU - Monacelli, Lorenzo

AU - Akashi, Ryosuke

AU - Oganov, Artem R.

PY - 2021

DA - 2021/03/10

PB - Wiley

SP - 2006832

IS - 15

VL - 33

SN - 0935-9648

SN - 1521-4095

ER -

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@article{Troyan_2021,

doi = {10.1002/adma.202006832},

url = {https://doi.org/10.1002%2Fadma.202006832},

year = 2021,

month = {mar},

publisher = {Wiley},

volume = {33},

number = {15},

pages = {2006832},

author = {Ivan A. Troyan and Dmitrii V. Semenok and Alexander G. Kvashnin and Andrey V. Sadakov and Oleg A. Sobolevskiy and Vladimir M. Pudalov and Anna G. Ivanova and Vitali B. Prakapenka and Eran Greenberg and Alexander G. Gavriliuk and Igor S. Lyubutin and Viktor V. Struzhkin and Aitor Bergara and Ion Errea and Raffaello Bianco and Matteo Calandra and Francesco Mauri and Lorenzo Monacelli and Ryosuke Akashi and Artem R. Oganov},

title = {Anomalous High-Temperature Superconductivity in {YH}

6},

journal = {Advanced Materials}

}

MLA
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Troyan, Ivan A. et al. “Anomalous High‐Temperature Superconductivity in YH 6.” Advanced Materials 33.15 (2021): 2006832. Crossref. Web.