Today at Berkeley Lab

The Mystery of the Lightweight Electrons

When electrons propagate in an ordered solid-state material, they are scattered by defects, lattice vibrations, and other electrons. This has the effect of making the electrons seem as though they are heavier than non-interacting electrons (i.e., electrons described by density functional theory). Now, researchers have discovered a system in which this common tenet of many-body theory is violated. More>

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