Structural, Magnetic, and Electrical Properties of Li2Ir1-xRuxO3

Abstract

The crystal structure, resistivity, and magnetic susceptibility of the Li2Ir1-xRuxO3 (x = 0-1) polycrystals have been investigated. We found that the parent antiferromagnetic phase disappears for x > 0.2 and bond dimers appear in the averaged structure for x > 0.5 and likely fluctuate for much smaller x. Unexpectedly, this system remains insulating for all the doping levels, in sharp contrast with the robust metallic state found in Sr2Ir1-xRuxO4. These results demonstrate that the essential physics of the doped A2IrO3 (A = Li, Na) system deviates significantly from the common one-band jeff=1/2 spin-orbit model.

5 pages, 4 figures

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Cited by in corpus (20)

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• Lattice-Tuned Magnetism of Ru4+(4d4) Ions in Single-Crystals of the Layered Honeycomb Ruthenates: Li2RuO3 and Na2RuO3
• New Honeycomb Iridium (V) Oxides: NaIrO${}_3$ and Sr${}_3$CaIr${}_2$O${}_9$
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• Fragile magnetic order in the honeycomb lattice Iridate Na${}_2$IrO${}_3$ revealed by magnetic impurity doping
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• First-order magneto-structural transition in single crystals of the honeycomb lattice Ruthenate Li${}_2$RuO${}_3$
• Magnetic and electrical anisotropy with correlation and orbital effects in dimerized honeycomb ruthenate Li${}_2$RuO${}_3$
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• Anion-Anion Bonding and the Topology in Ternary Iridium Seleno-Stannides
• Revelation of Mott insulating state in layered honeycomb lattice Li${}_2$RuO${}_3$
• Anomalous orbital moment in the ferromagnetic phase of the Sr4Ru3O10
• Doping effects on the valence bond solid of Li${}_2$RuO${}_3$ with Mn substitution
• Topological Majorana flat bands in the Kitaev model on a Bishamon-kikko lattice
• Effect of Ti-doping on the dimer transition in Lithium Ruthenate