In her dissertation she investigated the behaviour of conduction electrons in metals at low temperatures and high magnetic fields. At these low temperatures electronic interactions are of crucial importance for the physical phases in the metal, for example magnetic phases or superconductivity.
By studying the motion of the electrons in high magnetic fields, we shed some light on how this electron movement might be connected to properties of the metals.
You can find the thesis here: Fermi surface studies of magnetic f - and d-electron metals