This highlight focuses on the development of new thermometry required to study quantum materials and phenomena in high magnetic fields and at ultralow temperatures. The team has demonstrated that exceedingly small quartz tuning forks bathed in liquid 3He maintain a constant calibration that is magnetic field independent, thereby opening the use of these devices as new sensors of the response of quantum systems.

The finding in fullerides opens a new way of exploring the role electron interactions play in high-temperature superconductivity

The novel behavior could help scientists better understand the mechanisms behind high-temperature superconductivity.

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