Electronic Pairing in Exotic Superconductors
Electronic Pairing in Exotic Superconductors
复制标题
奇异超导体中的电子配对
DOI：
10.1063/1.881443
复制
发表时间：
1995
期刊：
影响因子：
3.5
通讯作者：
M. Maple
中科院分区：
文献类型：
--
作者：
D. Cox;M. Maple
对稀土、锕系元素、有机化合物和氧化物的研究已经产生了几类新的奇异超导体。这些包括磁有序超导体、A15超导体、巴基球超导体、重电子超导体、有机超导体和高Tc氧化物超导体。这些材料的性质与传统超导体（如Al和Zn）的性质显著不同，这些超导体可以通过超导性的Barclay-库珀-施里弗模型很好地描述。我们仔细区分BCS模型和更一般的BCS理论。在BCS理论中，超导性产生，松散地说，从电子对的行为基本上是玻色子和经历宏观凝聚的最低能量状态在临界温度Tc的BCS模型，在1957年提出的进一步规定，配对是介导的交换量子晶格振动（声子）之间的电子，产生对零自旋S（自旋单线态）。
Investigations of rare earth, Aactinide, organic and oxide compounds have yielded several new classes of exotic superconductors. These include magnetically ordered superconductors, A15 superconductors, buckyball superconductors, heavy‐electron superconductors, organic superconductors and high‐Tc oxide superconductors. These materials have properties significantly different from those of conventional superconductors such as Al and Zn, which are described well by the Bardeen‐Cooper‐Schrieffer model of superconductivity. We carefully distinguish between the BCS model and the more general BCS theory. In the BCS theory superconductivity arises, loosely speaking, from electron pairs that behave essentially as bosons and undergo macroscopic condensation to the lowest energy state at the critical temperature Tc The BCS model, presented in 1957, further specifies that the pairing is mediated by exchange of quantized lattice vibrations (phonons) between the electrons, yielding pairs with zero spin S (spin singlet) ...