Probing the dimensional crossover of critical fluctuations in ferromagnetic quantum critical system UCoSi2

In recent times, study of quantum critical point(QCP) and quantum phase transition(QPT) has become one of the most appealing research topics. Notably, near the critical point one observes unconventional power-law type divergence of different physical properties such as electrical resistivity or heat capacity. Such unusual behavior solely depend on the dimensionality of the critical spin fluctuations. We have recently investigated UCoSi2 which is proposed to be situated very close to ferromagnetic (FM) quantum critical point. Interestingly, it exhibits a dimensional crossover of critical fluctuations from 2D-FM to 3D-AFM which has not been experimentally observed before. μSR is an excellent technique to probe such spin fluctuations. Therefore, we propose to carry out μSR measurements on UCoSi2 to verify this dimensional crossover and study the spin dynamics.