Hyperscaling analysis of a disorder-induced ferromagnetic quantum critical point in Ni$_{1-x}$Rh$_{x}$ with $x = 0.375$

Abstract

Here we report on hyperscaling analysis on thermodynamic measurements as a function of temperature and magnetic field for Ni1−xRhx with x = 0.375 where a ferromagnetic quantum critical point has been recently identified [Phys. Rev. Lett. 124, 117203 (2020)]. The obtained critical exponents agree well with the theory proposed by Belitz, Kirkpatrick, and Vojta for disorder tuned quantum critical point in the preasymptotic region.