Visualizing the Atomic Configuration of Carbonate Groups in a

Cuprate SuperconductorsIn article number 2301021, Dongsheng Song, Ning Hao, Binghui Ge, and co‐workers show how the carbon atoms in the oxycarbonate superconductor (Cu,C)Ba2Ca3Cu4O11+δ replace Cu atoms in charge‐reservoir layers, contributing to the formation of triangular carbonates through strong...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2023-06, Vol.35 (26)
Main Authors: Lin, Renju, Wang, Qing, Song, Dongsheng, He, Chengping, Hu, Kejun, Liang, Zhiyao, Du, Haifeng, Hao, Ning, Ge, Binghui, Hai‐Hu Wen
Format: Article
Language:English
Subjects:
Atomic properties
Carbon
Carbonates
Current carriers
Materials science
Oxygen atoms
Reservoirs
Superconductivity
Superconductors
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Summary:Cuprate SuperconductorsIn article number 2301021, Dongsheng Song, Ning Hao, Binghui Ge, and co‐workers show how the carbon atoms in the oxycarbonate superconductor (Cu,C)Ba2Ca3Cu4O11+δ replace Cu atoms in charge‐reservoir layers, contributing to the formation of triangular carbonates through strong orbital hybridization with the surrounding oxygen. The introduction of carbon atoms not only reduces the number of oxygen atoms and thus decreases the number of charge carriers in the charge‐reservoir layers, but also heavily increases the O–Cu–O bond angle and improves the flatness of the superconducting CuO2 layers, revealing an unexpectedly competitive mechanism of superconductivity in oxycarbonate superconductors.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.202370188