期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.117207
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资金
- UCL
- Diamond Light Source
- EPSRC
- European Community's Seventh Framework Programme [312284]
- Swiss NSF through Sinergia network MPBH
- Grants-in-Aid for Scientific Research [25420723, 24740245] Funding Source: KAKEN
- EPSRC [EP/J016713/1, EP/G007357/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J016713/1, EP/G007357/1] Funding Source: researchfish
The magnetic structure and electronic ground state of the layered perovskite Ba2IrO4 have been investigated using x-ray resonant magnetic scattering. Our results are compared with those for Sr2IrO4, for which we provide supplementary data on its magnetic structure. We find that the dominant, long-range antiferromagnetic order is remarkably similar in the two compounds and that the electronic ground state in Ba2IrO4, deduced from an investigation of the x-ray resonant magnetic scattering L-3/L-2 intensity ratio, is consistent with a J(eff) = 1/2 description. The robustness of these two key electronic properties to the considerable structural differences between the Ba and Sr analogues is discussed in terms of the enhanced role of the spin-orbit interaction in 5d transition metal oxides. DOI: 10.1103/PhysRevLett.110.117207
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