Orbital Approach to High Temperature Superconductivity

• 作者: Peter Love
• 来源期刊: 自然科学期刊(英文)
• 学科: 化学
• 关键词: High Temperature SUPERCONDUCTIVITY D-Orbital CAPTURE CUPRATES COORDINATE COVALENT Bonding
• 年，卷（期）: 2019,（1）
• 页码范围: 1-7
• 页数: 7页
• 分类号: O6

摘要

High temperature superconductivity in cuprates is explained in terms of 3d-orbital capture in copper. In elemental Cu 3d-orbital capture abstracts an electron from the 4 s2 valence orbital, and leaves it as 4 s1. This is known since Cu occurs in Group IB of the Periodic Table. This forms an electron vacancy, or hole, in the valence shell. Therefore, the energy of 3d-orbital capture is stronger than the energy of unpairing of a paired-spin 4 s2 orbital. In cuprates 3d-orbital capture abstracts an electron from a Cu-O covalent bond, and leaves a hole in the excited state orbital. By electron-hole migration the excited state orbital leads to a coordinate covalent bond. This leads to superconductivity. The 3d-orbital process accounts for superconductivity and insulator behavior in cuprates. These results lend credence to the statement that 3d-orbital capture in copper is the cause of high temperature superconductivity.