Got mass? Princeton scientists observe electrons become both heavy and speedy

Got mass? Princeton scientists observe electrons become both heavy and speedy - A Princeton University-led team of scientists has shown how electrons moving in certain solids can behave as though they are a thousand times more massive than free electrons, yet at the same time act as speedy superconductors. Reference: 'Visualizing heavy fermions emerging in a quantum critical Kondo lattice,' Nature 486, 201–206 (14 June 2012) doi:10.1038/nature11204