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Abstract:
We report the results of low temperature transport, specific heat, and
magnetization measurements on high quality single crystals of the
bilayer perovskite Sr3Ru2O7, which is a close relative of the
unconventional superconductor Sr2RUO4 Metamagnetism is observed, and
transport and thermodynamic evidence for associated critical
fluctuations is presented. These relatively unusual fluctuations might
be pictured as variations in the Fermi surface topography itself.