Journal
PHYSICAL REVIEW B
Volume 83, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.220403
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Funding
- U.S. Department of Energy, Division of Materials Science [DE-AC02-98CH10886]
- Alexander vonHumboldt foundation
- NSERC of Canada
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We report a combined experimental and theoretical investigation of the magnetic structure of the honeycomb-lattice magnet Na2IrO3, a candidate for a realization of a gapless spin liquid. Using resonant x-ray magnetic scattering at the Ir L-3 edge, we find three-dimensional long-range antiferromagnetic order below T-N = 13.3 K. From the azimuthal dependence of the magnetic Bragg peak, the ordered moment is determined to be predominantly along the a axis. Combining the experimental data with first-principles calculations, we propose that the most likely spin structure is a zig-zag structure.
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