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MgB2---A new star in superconductor area

2018-05-02
Compared with the critical temperature of the existing complex oxide superconductors up to 160K, the critical temperature of MgB2 is not so high. Why does it cause so much sensation and repercussion? The first reason is that unlike complex oxide high-temperature superconductors, MgB2 is a simple binary compound and is the standard isotropic type I superconductor. MgB2's principle of superconductivity is similar to that of metal and is caused by the quantized vibration of phonons. Even in pairs, superconductivity is formed by materials in the form of phonons, and therefore belongs to the BCS theoretical category.