强关联和自旋磁交换作用对高温超导体临界温度的影响  

Effect of Strong Correlation and Exchange Interraction of Spin Magneton on Critical Temperature for Cuprate Superconductor

作　　者：秦荣华[1,2] 程启华 顾世洧[1,2] 

机构地区：[1]上海交通大学应用物理系 [2]郑州大学物理系

出　　处：《上海交通大学学报》1997年第1期10-14,共5页Journal of Shanghai Jiaotong University

摘　　要：提出了一种可能的超导理论，该理论强调了格点上的强关联相互作用和自旋磁相互作用在超导机制中的重要性．推出了铜氧化合物超导体的临界温度公式．结果表明，临界温度不仅强烈地依赖于自旋磁相互作用和格点上的强关联相互作用。A possible superconductivity theory is presented, which stresses the importance of the strong correlation on the lattice sites and the coupling of spin magnetic moments between ions or atoms and carriers in the superconductivity mechanism. The critical temperature formula for the superconducting transition is derived. The result shows that the critical temperature strongly depends not only on the strong correlation on the lattice sites and the coupling of spin magnetic moments between ions or atoms and carriers,but also on the doping concentrations.

关 键 词：临界温度 超导体 高TC 强关联 自旋磁矩 

分 类 号：O511.2[理学—低温物理]