KTH Royal Institute of Technology, ICT Materials Physics, Kista, Sweden.
J Phys Condens Matter. 2012 Oct 17;24(41):415602. doi: 10.1088/0953-8984/24/41/415602.
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 particular, photoemission from J(eff) = 1/2 the 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.
通过角分辨光电子能谱研究了 J(eff)=1/2 自旋轨道绝缘体 Sr3Ir2O7 的低能电子结构。将双层 Sr3Ir2O7 的结果与相关的单层化合物 Sr2IrO4 的可用文献数据进行比较，揭示了两种材料之间的定性相似性和相似的 J(eff)=1/2 带宽，但在光谱权重的分布上也存在明显差异。特别是，来自 J(eff)=1/2 态的光发射似乎被抑制。然而，人们发现，与 Sr2IrO4 的数据相比，Sr3Ir2O7 的数据总体上与能带结构计算更为一致。
