Hybrid crystals of cuprates and iron-based superconductors

• 作者: 代霞 勒聪聪 吴贤新 胡江平
• 来源期刊: 中国物理B（英文版）
• 关键词: iron-based superconductors cuprates first-principle calculation
• 年，卷（期）: 2016,（7）
• 页码范围: 077402-1-077402-7
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/25/7/077402

摘要

We propose two possible new compounds, Ba2CuO2Fe2As2 and 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.