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High-pressure effects on isotropic superconductivity in the iron-free layered pnictide superconductor BaPd2As2
http://hdl.handle.net/10228/00007071
http://hdl.handle.net/10228/00007071d5c9884b-983b-467a-a9d1-3db683bb8857
名前 / ファイル | ライセンス | アクション |
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scunit-2018_14.pdf (1.5 MB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||
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公開日 | 2019-03-13 | |||||||||||
資源タイプ | ||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
資源タイプ | journal article | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | High-pressure effects on isotropic superconductivity in the iron-free layered pnictide superconductor BaPd2As2 | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Abdel-Hafiez, M.
× Abdel-Hafiez, M.× Zhao, Y.× Huang, Z.× Cho, C.-w.× Wong, C. H.× Hassen, A.× Ohkuma, M.× Fang, Y.-W.× Pan, B.-J.× Ren, Z.-A.× Sadakov, A.× Usoltsev, A.× Pudalov, V.× 美藤, 正樹
WEKO
1968
× Lortz, R.× Krellner, C.× Yang, W. |
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抄録 | ||||||||||||
内容記述タイプ | Abstract | |||||||||||
内容記述 | While the layered 122 iron arsenide superconductors are highly anisotropic, unconventional, and exhibit several forms of electronic orders that coexist or compete with superconductivity in different regions of their phase diagrams, we find in the absence of iron in the structure that the superconducting characteristics of the endmember BaPd2As2 are surprisingly conventional. Here we report on complementary measurements of specific heat, magnetic susceptibility, resistivity measurements, Andreev spectroscopy, and synchrotron high pressure x-ray diffraction measurements supplemented with theoretical calculations for BaPd2As2. Its superconducting properties are completely isotropic as demonstrated by the critical fields, which do not depend on the direction of the applied field. Under the application of high pressure, Tc is linearly suppressed, which is the typical behavior of classical phononmediated superconductors with some additional effect of a pressure-induced decrease in the electronic density of states and the electron-phonon coupling parameters. Structural changes in the layeredBaPd2As2 have been studied by means of angle-dispersive diffraction in a diamond-anvil cell. At 12 GPa and 24.2 GPa we observed pressure induced lattice distortions manifesting as the discontinuity and, hence discontinuity in the Birch-Murnaghan equation of state. The bulk modulus is B0 = 40(6) GPa below 12 GPa and B0 = 142(3) GPa below 27.2 GPa. | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : Physical Review B 巻 97, 号 13, p. 134508-1-134508-9, 発行日 2018-04-12 |
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言語 | en | |||||||||||
出版者 | American Physical Society | |||||||||||
DOI | ||||||||||||
関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | https://doi.org/10.1103/PhysRevB.97.134508 | |||||||||||
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関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | URI | |||||||||||
関連識別子 | https://cir.nii.ac.jp/crid/1050001338938667008 | |||||||||||
日本十進分類法 | ||||||||||||
主題Scheme | NDC | |||||||||||
主題 | 427 | |||||||||||
NCID | ||||||||||||
収録物識別子タイプ | NCID | |||||||||||
収録物識別子 | AA11187113 | |||||||||||
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収録物識別子タイプ | EISSN | |||||||||||
収録物識別子 | 2469-9969 | |||||||||||
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収録物識別子タイプ | PISSN | |||||||||||
収録物識別子 | 2469-9950 | |||||||||||
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権利情報 | Copyright (c) 2018 American Physical Society | |||||||||||
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出版タイプ | VoR | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
査読の有無 | ||||||||||||
値 | yes | |||||||||||
連携ID | ||||||||||||
7567 |