| アイテムタイプ |
共通アイテムタイプ(1) |
| 公開日 |
2025-07-28 |
| タイトル |
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|
タイトル |
Creation of hyperoxia superconducting phase in La2CuO4 by applying shear strain under high-pressure compression |
|
言語 |
en |
| 著者 |
美藤, 正樹
Abe, Wasuke
Yamamoto, Katsumi
Tajiri, Takayuki
Horita, Zenji
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| 著作権関連情報 |
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権利情報Resource |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
権利情報 |
Copyright (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) license (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
|
言語 |
en |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We successfully stabilized the hyperoxia superconducting phase of La2CuO 4, the parent insulating compound of La-based cuprate superconductors, by applying compression under high pressure and successive shear strains via the process of high-pressure torsion (HPT). Superconducting phases in the La2CuO4 system are created via the hole doping by replacing the La-sites with alkali-earth metals or by overdoping oxygen. However, the present study demonstrates that the HPT processing induces structural strain, and subsequent annealing stabilizes the hyperoxia phase, i.e., the superoxide phase. The superconducting transition temperature Tc systematically varies as a function of the revolution number N in HPT processing under compression of 6 GPa, and Tc has the maximum value of approximately 40 K for N≤1. Stabilized superconducting states intrinsically have a large critical field at the 20 T level. This approach proposes a high-pressure material synthesis method that is useful for mechanically tuning carriers in insulating La2CuO4. |
|
言語 |
en |
| 書誌情報 |
en : Journal of Applied Physics
巻 137,
号 1,
p. 015904,
発行日 2025-01-03
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| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Doping |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
High temperature superconductivity |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
High temperature superconductors |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
Metal-oxide superconductors |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
High pressure instruments |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Annealing |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
Materials synthesis and processing |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| DOI |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1063/5.0246733 |
| NCID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00693547 |
| ISSN |
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収録物識別子タイプ |
PISSN |
|
収録物識別子 |
0021-8979 |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1089-7550 |
| 研究者情報 |
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|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/139_ja.html |
| 論文ID（連携） |
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|
値 |
10461987 |
| 連携ID |
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|
値 |
14725 |
10461987_vor.pdf (3.9 MB)
