Ginzburg-Landau Parameter (κ)
A dimensionless parameter characterizing the transition between the normal and superconducting states in a superconductor.
📜
The statement of the theorem
Define the characteristic lengths (magnetic penetration depth) and (coherence length) in a superconductor. The Ginzburg-Landau parameter is defined as the ratio of these two lengths:\n \nThis parameter determines the relative strength of magnetic field penetration versus the spatial variation of the superconducting order parameter .
Source: Wikipedia