Hybrid crystals of cuprates and iron-based superconductors

We propose two possible new compounds, Ba2CuO2Fe2As2and K2CuO2Fe2Se2, which hybridize the building blocks of two high temperature superconductors, cuprates and iron-based superconductors. These compounds consist of square CuO2 layers and antifluorite-type Fe2X2（X = As, Se） layers separated by Ba/K....

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Bibliographic Details
Published in:Chinese physics B 2016-07, Vol.25 (7), p.412-418
Main Author: 代霞 勒聪聪 吴贤新 胡江平
Format: Article
Language:English
Subjects:
CuO2
动态稳定
化合物
混合晶体
电子结构
铁基
铜氧化物
高温超导体
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Summary:We propose two possible new compounds, Ba2CuO2Fe2As2and K2CuO2Fe2Se2, which hybridize the building blocks of two high temperature superconductors, cuprates and iron-based superconductors. These compounds consist of square CuO2 layers and antifluorite-type Fe2X2（X = As, Se） layers separated by Ba/K. The calculations of binding energies and phonon spectra indicate that they are dynamically stable, which ensures that they may be experimentally synthesized. The Fermi surfaces and electronic structures of the two compounds inherit the characteristics of both cuprates and iron-based superconductors. These compounds can be superconductors with intriguing physical properties to help to determine the pairing mechanisms of high Tc superconductivity.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/25/7/077402