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Journal Article

Quasi-two-dimensional Fermi liquid properties of the unconventional superconductor Sr2RuO4

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Bergemann, C., Mackenzie, A. P., Julian, S. R., Forsythe, D., & Ohmichi, E. (2003). Quasi-two-dimensional Fermi liquid properties of the unconventional superconductor Sr2RuO4. Advances in Physics, 52(7), 639-725. doi:10.1080/00018730310001621737.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-EEE0-9
In this paper, we review a large set of experimental data acquired over the past decade by several groups, and demonstrate how it can be used to construct a detailed picture of the low-temperature metallic state of the unconventional superconductor Sr2RuO4. We show how the normal state properties can be consistently and quantitatively explained in terms of Landau quasi-particles moving on a quasi-two-dimensional Fermi surface. Besides presenting our full and extensive data sets, we explain the details of some novel data analysis tools that can be used within the general context of quasi-two-dimensional metals. We then use the experimental Fermi surface and band dispersion to reassess several issues relevant to the unconventional superconductivity in Sr2RuO4, such as the spin-fluctuation spectrum, quasi-particle renormalization, interlayer dispersion and pressure dependence.