Mechanisms of Conventional and High Tc Superconductivity (International Series of Monographs on Physics)

It is a very good book for understanding the origin of superconductivity in conventional as well as in unconventional superconductors. The book describes various main key factors which is helpful for building concepts about nature of superconductivity. I strongly recommend this book for getting a good concept about origin of superconductivity in various low and high Tc superconductors.