Localized-to-itinerant electron transition in Sr2Ir1-xRuxO4

R. J. Cava, B. Batlogg, K. Kiyono, H. Takagi, J. J. Krajewski, W. F. Peck, L. W. Rupp, C. H. Chen

Research output: Contribution to journalArticlepeer-review

140 Scopus citations

Abstract

Sr2IrO4 and Sr2RuO4 are both K2NiF4-structure oxides. Sr2IrO4 is a weakly ferromagnetic insulator and Sr2RuO4 a paramagnetic metal. The Sr2Ir1-xRuxO4 solid solution displays surprising physical properties. On the substitution of Ru to Sr2IrO4, the Ru first exhibits its expected S=1 local magnetic moment, but at a critical Ru concentration of x0.7 the local moment disappears, the apparent density of states at EF increases, and an insulator-to-metal transition occurs. These changes in physical properties are accompanied by a change in the crystallographic cell parameters.

Original languageEnglish (US)
Pages (from-to)11890-11894
Number of pages5
JournalPhysical Review B
Volume49
Issue number17
DOIs
StatePublished - 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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