Definitions for "Superconductors"
A small number of metals that lose nearly all their electrical resistance in certain temperature ranges with the result that very high currents can be transmitted with very low losses. Use of these materials for electric power generation (superconducting turbine generators), storage (superconducting magnetic energy storage system, SMES) and transmission (superconducting transmission cables) promises important technical and cost advantages.
materials that lose all resistance to the flow of current at low temperatures. They operate extremely fast and produce almost no heat.
Materials that don't have any resistance to electrical current flow. Zero resistance can be achieved only at very, VERY cold temperatures.