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

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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
Issue number17
StatePublished - Jan 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Cava, R. J., Batlogg, B., Kiyono, K., Takagi, H., Krajewski, J. J., Peck, W. F., Rupp, L. W., & Chen, C. H. (1994). Localized-to-itinerant electron transition in Sr2Ir1-xRuxO4. Physical Review B, 49(17), 11890-11894. https://doi.org/10.1103/PhysRevB.49.11890