""explain us how these informations take a mass""
The Meissner effect is one of the defining properties of superconductivity and its discovery established that the appearance of superconductivity is a phase transition.
Magnetic field lines are excluded from a superconductor when it is below its critical temperature.
This exclusion of the magnetic field is a manifestation of the superdiamagnetism that appeared during the phase transition from the conductor to the superconductor, for example by lowering the temperature below the critical temperature.
Meissner's superconductivity effect serves as an important paradigm for the mechanism for generating mass M
λ (M)= h/Mc
In fact, this analogy is an abelian example of the Higgs mechanism, which generates the electroweak masses W ± and Z to gauge particles in high energy physics.