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Abstract
We synthesize and study single crystals of the layered honeycomb lattice Mott insulators Na2RuO3 and Li2RuO3 with magnetic Ru4+(4d4) ions. The newly found Na2RuO3 features a nearly ideal honeycomb lattice and orders antiferromagnetically at 30 K. Single crystals of Li2RuO3 adopt a honeycomb lattice with either C2/m or more distorted P21/m below 300 K, depending on detailed synthesis conditions. We find that Li2RuO3 in both structures hosts a well-defined magnetic state, in contrast to the singlet ground state found in polycrystalline Li2RuO3. A phase diagram generated based on our results uncovers a new, direct correlation between the magnetic ground state and basal-plane distortions in the honeycomb ruthenates.
Document Type
Article
Publication Date
10-15-2014
Digital Object Identifier (DOI)
http://dx.doi.org/10.1103/PhysRevB.90.161110
Funding Information
This work was supported by the National Science Foundation via Grants No. DMR-0856234, No. DMR-1265162, and No. DMR-1056536 (R.K.K.), Russian Science Foundation via RSCF Grant No. 14-22-00004 (S.V.S.), German project FOR 1346, Cologne University via German excellence initiative (D.K.), DOE BES Office of Scientific User Facilities (F.Y.), and China Scholarship Council (J.C.W.).
Repository Citation
Wang, J. C.; Terzic, Jsaminka; Qi, T. F.; Ye, Feng; Yuan, Shujuan; Aswartham, Saicharan; Streltsov, S. V.; Khomskii, D. I.; Kaul, Ribku K.; and Cao, Gang, "Lattice-Tuned Magnetism of Ru4+(4d4) Ions in Single Crystals of the Layered Honeycomb Ruthenates Li2RuO3 and Na2RuO3" (2014). Physics and Astronomy Faculty Publications. 301.
https://uknowledge.uky.edu/physastron_facpub/301
Supplemental Material
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Table 1.GIF (48 kB)
Table 1
Table 2.GIF (36 kB)
Table 2
Notes/Citation Information
Published in Physical Review B: Condensed Matter and Materials Physics, v. 90, no. 16, article 161110, p. 1-6.
©2014 American Physical Society
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