  The complex perovskite oxide SrRuO3 shows intriguing transport properties at
low temperatures due to the interplay of spin, charge, and orbital degrees of
freedom. One of the open questions in this system is regarding the origin and
nature of the low-temperature glassy state. In this paper we report on
measurements of higher-order statistics of resistance fluctuations performed in
epitaxial thin films of SrRuO3 to probe this issue. We observe large
low-frequency non-Gaussian resistance fluctuations over a certain temperature
range. Our observations are compatible with that of a spin-glass system with
properties described by hierarchical dynamics rather than with that of a simple
ferromagnet with a large coercivity.
