Physica B: Condensed Matter

Redistribution of the spectral intensity in a layered 4d-electron superconductor Sr2RuO4 observed by the photoemission spectroscopy

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Spectra from photoemission spectroscopy (PES) of a recently discovered layered-perovskite superconductor Sr2RuO4 are reported. The PES spectrum of Sr2RuO4 around the Fermi level (EF) is apparently different from the non-interacting density of states obtained by a band calculation, suggesting the importance of strong electron correlation in this system.