Searching for quantum oscillations in the thermal transport properties

The observations of the Righi-Leduc (thermal Hall) effect without the Lorentz force leads to the debate on the origins of fermions versus bosons. The recent report of quantum oscillations in Kitaev spin liquid points to a possible resolution. Quantum oscillations due to the Landau quantization of electrons in a magnetic field would most likely capture only the fermionic thermal transport effect. Thus, searching for the oscillatory thermal Hall effect provides a crucial potential path to separate the fermionic and bosonic contributions. We report the observation of quantum oscillations in the longitudinal and transverse magnetothermal effect of a correlated Kagome superconductor. The temperature variance of the oscillatory components indicates that the Fermi Liquid theory can describe the pattern of these oscillations. The results present the oscillatory thermal Hall effect as a powerful probe to the correlated quantum materials.