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Abstract:
We describe transport measurements in single-crystal. high-purity
Ca3Ru2O7. The observation of a large linear magnetoresistance together
with low frequency quantum oscillations is shown to be consistent with a
small volume Fermi surface incompletely gapped by density wave
formation. This complements previous ARPES experiments. The quantum
oscillations are more pronounced in the Hall signal than in the
longitudinal resistivity. This unusual observation is also explained by
the peculiar electronic structure in this material. We remark oil the
similarity between our observations in Ca3Ru2O7 and the observations of
quantum oscillations in the underdoped cuprate superconductors.
