Spin glass behavior of Mn-intercalated TiS$_{2}$*

We have performed extensive magnetic measurements on Mn$_{0.09}$TiS$_{2}$ to determine the nature of the low-temperature transition previously observed in this intercalated dichalcogenide. Zero-field cooled and field-cooled dc magnetization measurements exhibit a cusp and bifurcation at $T_{g}$ = 5.5 K. The real and imaginary parts of the ac susceptibility also show peaks in the vicinity of $T_{g}$. The peaks shift with frequency, with the magnitude of the shift being similar to those observed in RKKY-mediated spin glasses. Time-dependent dc magnetization measurements suggest aging behavior at temperatures lower than $T_{g}$, consistent with non-equilibrium dynamics. The totality of the evidence suggests that Mn$_{0.09}$TiS$_{2}$ is a spin glass similar to canonical RKKY spin glasses such as Cu$_{1-x}$Mn$_{x}$.