Quantum Phase Transitions
Quantum phase transitions and quantum criticality in helium films
We study helium films grown as atomic layers on the atomically flat surface of graphite. This can be viewed as a particularly clean self-assembled nanoscale system, grown by a simple “bottom-up” technique. The helium films are cooled in a nuclear adiabatic demagnetization refrigerator. The film constitutes a system of “cold atoms” subject to a lattice potential. Helium films provide simple model systems to study some central issues in the physics of strongly correlated matter (both fermions and bosons). This research impacts on the understanding of more complex materials of future technological relevance.
Quantum fluids projects