Cool! Or lukewarm. Or both since they tested from 5K to 300K. And found that the thin films (5-18nm) 'behaved like' metals wrt temperature dependence of resisti

Cool! Or lukewarm. Or both since they tested from 5K to 300K. And found that the thin films (5-18nm) 'behaved like' metals wrt temperature dependence of resistivity, where thicker films of the same material (80nm) 'behaved like' insulators. I wonder how traditional superconductor materials would fare in a super thin film regime like this.