Evidence for correlation effects in Sr2RuO4 from resonant and x-ray photoemission spectroscopy

Yokoya, T and Chainani, A and Takahashi, T and KatayamaYoshida, H and Kasai , M and Tokura , Y and Shanthi, N and Sarma , DD (1996) Evidence for correlation effects in Sr2RuO4 from resonant and x-ray photoemission spectroscopy. In: Physical Review B: Condensed Matter, 53 (13). pp. 8151-8154.

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Abstract

We study the electronic structure of Sr2RuO4, a noncuprate layered superconductor (T-c=0.93 K), using electron spectroscopy. X-ray photoemission spectroscopy shows that the single particle occupied density of states (DOS) is in fair agreement with the calculated DOS. However, resonant photoemission spectroscopy across the Ru 4p-4d threshold establishes the existence of a correlation satellite to the Ru 4d band. The results indicate substantial charge-transfer character at the Fermi level, with on-site correlations U-dd comparable in magnitude to the Ru-O hopping integral, like the cuprates.

Item Type:	Journal Article
Publication:	Physical Review B: Condensed Matter
Publisher:	The american physical society
Additional Information:	Copyright of this article belongs to The american physical society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	26 Apr 2011 06:11
Last Modified:	26 Apr 2011 06:11
URI:	http://eprints.iisc.ac.in/id/eprint/37173

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