High-Tc superconductors and interaction between pairs

✍ Scribed by Huei Peng; L. Luo

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 774 KB
• Volume: 211
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(93)90145-g

✦ Synopsis

We propose that there is dynamic interaction between pairs (called the pair interaction ). The pair interaction is independent of the formation mechanism of pairs, and, thus, may be introduced into different models of superconductivity as long as there are pairs in those models. To show the effects of the pair interaction, we introduce it into the BCS theory, and find that the energy gap in terms of 2d/keTc varies from zero to 8 and higher. To test for the existence of the pair interaction, we derive a general expression for the x-dependence of the pair interaction, where x denotes all factors which may affect the pair interaction and the energy gap, such as the mass of the ion (an isotope-like effect), external pressure, composition, etc.