1. The ${J}_{\mathrm{eff}}=\frac{1}{2}$ insulator Sr3Ir2O7studied by means of angle-resolved photoemission spectroscopy
- Author
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M. H. Berntsen, B. M. Wojek, S. Boseggia, Oscar Tjernberg, D. Prabhakaran, D. F. McMorrow, Johan Chang, Andrew T. Boothroyd, and Henrik M. Rønnow
- Subjects
Spectral weight ,Condensed matter physics ,Chemistry ,Photoemission spectroscopy ,Bilayer ,Analytical chemistry ,General Materials Science ,Angle-resolved photoemission spectroscopy ,Insulator (electricity) ,Electronic structure ,Condensed Matter Physics - Abstract
The low-energy electronic structure of the J_{eff}=1/2 spin-orbit insulator Sr3Ir2O7 has been studied by means of angle-resolved photoemission spectroscopy. A comparison of the results for bilayer Sr3Ir2O7 with available literature data for the related single-layer compound Sr2IrO4 reveals qualitative similarities and similar J_{eff}=1/2 bandwidths for the two materials, but also pronounced differences in the distribution of the spectral weight. In particuar, photoemission from the J_{eff}=1/2 states appears to be suppressed. Yet, it is found that the Sr3Ir2O7 data are in overall better agreement with band-structure calculations than the data for Sr2IrO4.
- Published
- 2012
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