A Reverse Approach to Superconductivity

• 作者: Claudia Felser Jürgen K?hler Shuiquan Deng
• 来源期刊: 现代物理(英文)
• 学科: 数学
• 关键词: SUPERCONDUCTIVITY Generalized COHERENT State Flat/Steep BAND Model REVERSE APPROACH
• 年，卷（期）: 2013,（6）
• 页码范围: 10-13
• 页数: 4页
• 分类号: O1

摘要

In contrast to the normal operator approach, our reverse approach starts from the state vector in the Hilbert space. In this work, we give a concise introduction to our recent work in this aspect. By postulating a superconducting state (SCS) to be a generalized coherent state (GCS) constructed by pure group theory, we show that some important properties such as the Cooper pairs of the SCS naturally appear in this new framework without resorting to the microscopic origin. This latter characteristic renders this theory a more universal feature in comparison with other theories developed by the operator approach. The studies on the residue of the pair-wise constraint due to the collapse of the GCS lead to a “flat/steep” band model for searching new superconductors.