Quantum obstacle course changes material from superconductor to insulator

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Researchers from Brown University have demonstrated an unusual method of putting the brakes on superconductivity, the ability of a material to conduct an electrical current with zero resistance.
from - http://phys.org/news/2016-11-quantum-obstacle-material-superconductor-insulator.html

"a material to conduct an electrical current with zero resistance" ? Is this not ohm's law to a logical extreme?, or am I missing something?
 
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