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Date Time Magnetism Drives Metals to Insulators in New Experiment Like all metals, silver, copper, and gold are conductors. Electrons flow across them, carrying heat and electricity. While gold is a good conductor under any conditions, some materials have the property of behaving like metal conductors only if temperatures are high enough; at low temperatures, they act like insulators and do not do a good job of carrying electricity. In other words, these unusual materials go from acting like a chunk of gold to acting like a piece of wood as temperatures are lowered. Physicists have developed theories to explain this so-called metal-insulator transition, but the mechanisms behind the transitions are not always clear.

Danielm silevitchYejun fengDavid mandrusThomas rosenbaumJohn slaterScotte cooperNevill francis mottPatrick leeJohns hopkins universityNature communicationsUniversity of tennesseeNational science foundationUs department of energyOkinawa institute of scienceCabinet officeOkinawa institute for science