High Field Torque Magnetometry of SmB$_6$

The Kondo Insulator SmB$_6$ has been observed to have a small, residual surface conductance apparent below 5 K. Torque Magnetometry was employed to find quantum oscillations in the magnetization -- the de Haas-van Alphen effect. Using magnetic fields up to 45 T, we were able to resolve 3 different pieces of Fermi Surface, at frequencies of 35 T, 300 T, and 400 T. Angular dependence of these oscillation frequencies indicate that they are two dimensional in nature. Additionally, Landau Level indexing analysis for the 35 T pocket gives a $-1/2$ intercept in the infinite field limit, a Berry phase contribution consistent with Dirac electronic system such as graphene.