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  The Unconventional Copper Oxide Superconductor with Conventional Constitution

Li, W. M., Zhao, J. F., Cao, L. P., Hu, Z., Huang, Q. Z., Wang, X. C., et al. (2020). The Unconventional Copper Oxide Superconductor with Conventional Constitution. Journal of Superconductivity and Novel Magnetism, 33, 81-85. doi:10.1007/s10948-019-05302-6.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-5B52-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-A110-2
Genre: Journal Article

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 Creators:
Li, W. M.1, Author
Zhao, J. F.1, Author
Cao, L. P.1, Author
Hu, Zhiwei2, Author              
Huang, Q. Z.1, Author
Wang, X. C.1, Author
Yu, R. Z.1, Author
Long, Y. W.1, Author
Wu, H.1, Author
Lin, H. J.1, Author
Chen, C. T.1, Author
Gong, Z. Z.1, Author
Guguchia, Z.1, Author
Kim, J. S.1, Author
Stewart, G. R.1, Author
Uemura, Y. J.1, Author
Uchida, S.1, Author
Jin, C. Q.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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 Abstract: A new Ba2CuO4-y superconductor with critical temperature (T-c) exceeding 70 K was discovered. The X-ray absorption measurement gives evidence that this cuprate resembles La2CuO4 but is doped with a fairly large amount of holes, while in contrast to the so far known hole-doped high-T-c cuprates, the new cuprate possesses a much shorter local apical oxygen distance as well as much expanded in-plane Cu-O bond, leading to unprecedented compressed local octahedron. In compressed local octahedron, the Cu3d3z(2)-r(2) orbital level will be lifted above the Cu3dx(2)-y(2) orbital level with more three-dimensional features, implying that pairing symmetry may carry admixtures from more than one gap, suggesting that Ba2CuO4-y composed of alkaline earth copper oxides that are the essential elements to form cuprate superconductors may belong to a new branch of cuprate superconductors.

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Language(s): eng - English
 Dates: 2020-01-252020-01-25
 Publication Status: Published in print
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Title: Journal of Superconductivity and Novel Magnetism
Source Genre: Journal
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Publ. Info: New York : Springer Science + Business Media B.V.
Pages: - Volume / Issue: 33 Sequence Number: - Start / End Page: 81 - 85 Identifier: ISSN: 1557-1939
CoNE: https://pure.mpg.de/cone/journals/resource/954925560560