Two researchers play with nanostructures in a fun, fertile physics playground: the space between two things.

At high magnetic field, free-flowing particles condense into “puddles.”

Working with a solid form of helium at ultra-low temperatures, scientists observed a quantum phase separation that may shed light on analogous processes in classical systems like metal alloys.

Controlled by electron interactions, the Mott transition is accompanied by a reduction in the volume of the atomic lattice.