![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The long periodicity of a modulated structure in Bi-Sr-Ca-Cu-O system is explained by using a 2D electron system based upon the Cu-O layer. The close relation between the specific microdomain structure and a 2D electron-hole system is considered in order to discuss high-Tc superconductivity in the layered Bi-Sr-Ca-Cu-O system. The modulated structure in the incommensurate (IC) state is regarded as the precursor of the ensuing superconducting (SC) state, which can be realized at some optimum lattice length of the 2D electron-hole system. The Madelung energy of the 2D system plays an important role to realize the high-Tc superconductivity.