Electronic structure of the metallic oxide <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>ReO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Johannes Falke, C. F. Chang, C. E. Liu, D. Takegami, A. Meléndez-Sans, Chi-Sheng Chen, L. Zhao, A. C. Komarek, Chang‐Yang Kuo, C. T. Chen, L. H. Tjeng
Abstract
ReO${}_{3}$ is a remarkable transition metal oxide in that it has the highest conductivity of all oxides, comparable even with that of silver. Using state of the art bulk-sensitive angle-resolved photoelectron spectroscopy, the authors are able to observe clear dispersions of the Re 5$d$ and O 2$p$ derived bands as well as the momentum splitting of the Fermi surface due to the Re 5$d$ spin-orbit interaction. The experimental results are compared quantitatively to density functional theory band structure calculations, thereby providing a deeper understanding of the material class of the 5$d$ oxides.