Abstract

We report on the electronic structure of the bilayer ruthenate Ca 3 Ru 2 O 7 using high quality single-crystals grown by a floating-zone method which have the lowest residual resistivity so far achieved. The quantum oscillation, specific heat, and angle-resolved photoemission-spectroscopy (ARPES) measurements performed on these crystals establish that Ca 3 Ru 2 O 7 is a quasi two-dimensional low-carrier metal with a density-wave instability.

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