• Shambhoo Nath Prabhakar

Type II superconductors also have zero resistance, but their perfect diamagnetism occurs only below the lower critical field BC1. Then one defines the ratio of λ and ξ as a Ginzburg-Landau parameter k k plays a very important role in type II superconductors. The density of super electrons ns which characterizes the superconducting state, increase from zero at the interface with a normal material to a constant value for inside, and the length scale for this to occur is the coherence length As external magnetic field B decays exponentially to zero inside a superconductor

Phase transition, super conductivity, Helmholtz free energy, Gibbs density.

"Review of Ginzburg Landau theory of Type II Superconductivity", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 9, page no.468-474, September-2020, Available :http://www.jetir.org/papers/JETIR2009268.pdf

"Review of Ginzburg Landau theory of Type II Superconductivity", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 9, page no. pp468-474, September-2020, Available at : http://www.jetir.org/papers/JETIR2009268.pdf