Experimental condensed matter physics
Exploring quantum materials with X-rays and neutrons
We are an experimental condensed matter physics group at the University of Toronto. We investigate quantum materials using X-ray and neutron scattering, and develop new spectroscopic tools to explore their magnetic and electronic properties.
Research themes
Quantum magnetism
We investigate magnetic interactions and excitations in quantum materials, including the search for Kitaev quantum spin-liquid physics in α-RuCl 3 .
Superconductivity and strain
We explore how uniaxial strain changes crystal structure and superconductivity in cuprates, using in-situ control at low temperatures.
Spin–orbit-coupled materials
We study how spin, orbital, and lattice degrees of freedom interact in 4d and 5d transition-metal materials.
We combine crystal growth and laboratory characterization at the University of Toronto with X-ray and neutron scattering experiments at major research facilities. Together, these approaches connect the properties of quantum materials with their underlying structure and excitations.
Squeezing superconductivity
Gao et al., Advanced Materials 38, e09308 (2026).
A small deformation can profoundly change a superconductor. By applying uniaxial strain to the cuprate La₁.₈₇₅Ba₀.₁₂₅CuO₄, we found that it separates into three structural states with distinct superconducting behaviours. One contains nanoscale crystalline domains within an amorphous matrix. These results reveal how strain can reorganize—and enhance—superconductivity near a structural instability.
When spins, orbitals, and the lattice act together
Frontini et al., Physical Review Letters 133, 036501 (2024).
The electronic behaviour of quantum materials cannot always be understood without considering the motion of their atoms. Using resonant inelastic X-ray scattering, we revealed strong coupling between electronic excitations and lattice vibrations in rhenium-based double perovskites. Experiments and theoretical calculations identify an entangled spin–orbit–lattice state, highlighting the importance of atomic motion in these materials.