Osborn told physicsworld.com that the S± symmetry has “profound consequences for the nature of the pairing interaction”. Unlike the BCS interaction, which is attractive over short distances, Osborn says that S+- symmetry implies that the pairing mechanism in their superconductor is repulsive at short distances and attractive at longer distances. “That’s important information for theorists”, he said, but cautioned “it doesn’t say what the precise mechanism actually is”.The above quote comes from the linked article at Physicsworld.com titled, "Iron-based superconductors really are different." As in the Casimir effect, the magnetic effects are due to the strong charge orientations of the subatomic particles. The subatomic particle orientation is dictated by the physical structure of the atom. Hence, different atoms at different temperatures (distributed velocity) can have net magnetic north orientation, net magnetic south orientation, or net zero (neutral) magnetic orientation.
If the scientists would like to know what the precise mechanism actually is, they need to read Secrets of the Aether.