Which theory of superconductivity was developed by Landau?
The Ohm-Landau theory
The Schrödinger-Landau theory
The Gauss-Landau theory
The Ginzburg–Landau theory
Answer
The Ginzburg–Landau theory, proposed by Landau in 1950, revolutionized the understanding of superconductivity. It describes superconductors as materials with a complex order parameter, characterized by a wave function that varies smoothly over length scales larger than the atomic spacing. This theory successfully explains the temperature-dependent behavior of superconductors, including the existence of a critical temperature below which superconductivity occurs.
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