Cryogen-free dilution refrigerator with a 14T magnet with fast sample loading mechanism

Quantum materials are novel systems, engineered in laboratories, which host strong enough electron-ic interactions to display quantum phenomena such as superconductivity, correlated insulating states and magnetism with tremendous technological applications. These phenomena emerge when the elec-tronic interaction dominate over the thermal fluctuations of the system, i.e. at mK temperatures. Ex-perimentally, these temperatures are reached in dilution refrigerator systems. Consequently, we aim to add such a dilution refrigerator, capable of a base temperature of 10 mK and equipped with a 14T superconducting magnet. The ultra-high 14T magnetic field will allow us to introduce a new quantizing energy scale to the material, and thus to tune the electronic interaction. In particular, this field will be high enough to condense all the electronic carriers of a variety of quantum materials into a single en-ergy level, causing the electronic spectrum to become analogous to a one-dimensional system which is highly sensitive to perturbations. Attaining this ultra-quantum limit permits the emergence of novel phenomena such as charge/spin density waves and quantum Hall effect. This refrigerator system will thus open a completely new axis of research. It will allow to probe the electronic response to the temperature and field constraints through 48 highly-filtered DC transmis-sion lines designed to suppress electromagnetic heating of the electrons with an output integrated in our measurement setup made of an array of DC pre-amplifiers and lock-in amplifiers. The fast loading mechanism is crucial to optimize our usage of this system by greatly reducing loading times. Finally, we wish to buy a cryogen-free system both for its simplicity of usage and the low cost of operation.