Congratulations to Étienne, who obtained his doctorate after defending a thesis on thermal transport in the Kitaev quantum spin liquid spin candidate α-RuCl3!
Researchers in CIFAR’s Quantum Materials and Quantum Information Science programs are advancing quantum technologies that will revolutionize computing, electrical grids, transportation networks, and more.
In strange metals, electrons undergo Planckian dissipation. The temperature dependence of this strong scattering is anomalous (linear rather than quadratic resistivity). The Taillefer group has shown that the magnetic field dependence of this scattering is normal.
Electrons with Planckian scattering obey standard orbital motion in a magnetic field
Ataei et al., Nat. Phys. 18, 1420-1424 (2022).
Electrons with Planckian scattering in strange metals follow standard rules of orbital motion in a magnet
I. Fadelli, Phys.org
Influence of high magnetic fields on electrons undergoing Planckian dissipation
EMFL News, 4 (2022)
Percer les mystères des matériaux quantiques avec les champs magnétiques les plus intenses
H. Vincelette, IQ News (2023)
Strong interactions between electrons is an inexhaustible source of intriguing collective properties. The quantum materials we study include unconventional superconductors, spin liquids, topological insulators and Weyl semimetals, among others. Our experimental approach consists of measuring the electric, thermal and thermoelectric transport properties of these materials under different conditions of temperature, magnetic field and pressure. These measurements allow us to explore the behaviour of electrons and to describe the underlying interactions.
Unconventional superconductors, spin liquids, topological insulators, Weyl semimetals.
Property of a material that allows it to transport an electric current with zero resistance and to expel a magnetic field.
Electric resistivity, thermal conductivity, Hall effect, Seebeck effect, Nernst effect, Righi-Leduc effect.
Two dilution fridges allow us to reach temperatures as low as a few dozen millikelvins.
Superconducting coils give us access to magnetic fields up to 20 T.
Our pressure cells can apply up to 2 GPa, the pressure of roughly 20 000 atmospheres.
Photo : UdeS - Martin Blache
Département de Physique
Université de Sherbrooke
2500 boul. Université, Sherbrooke (Québec)
Canada J1K 2R1