A Millikelvin Heat Capacity Measurement Setup for Quantum Materials Characterisation

Accurate heat capacity measurements are essential for understanding the fundamental properties of quantum materials, especially at extremely low temperatures and in high magnetic fields, where novel quantum phenomena emerge. We present a cutting-edge heat capacity measurement setup designed for precise operation at millikelvin temperatures and under high magnetic fields in a fast characterisation cryostat, enabling the study of a wide range of quantum materials. The presented setup enables quick sample analysis and facilitates high-throughput studies. To illustrate the effectiveness of this system, we will present data from commonly known materials exhibiting quantum behaviour, demonstrating the system's capability to resolve critical features at low temperatures and in applied magnetic fields. We further demonstrate customisability of the setup to account for various sample heat capacities and temperature ranges and showcase the reliability of the obtained results using a python-based data analysis software and different fitting routines for the short pulse method.