What the Pairs Kept Arranging

Uranium ditelluride. Below about two kelvin the electrons find each other and the wire forgets friction.

Warm past that mark and the forgetting stops. Resistance comes back as if the pairs had never met.

Except on the cleaner crystal, under a field that can turn, something of those same pairs keeps its spacing— a density that still waves where superconductivity has already left the room.

Not the state. What the state had been making of them while it lasted, and a little after.

Surface only so far. The inside has not spoken.