2019/05/05 by Joyce, J. J., Graham, K. S., Zhu, J. -X. +7
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)
paper · doi:10.48550/arxiv.1905.01732
The electronic structure of plutonium metal and its compounds pose a grand challenge for a fundamental understanding of the Pu-5f electron character. For 30 years the plutonium chalcogenides have been especially challenging, and multiple theoretical scenarios have been proposed to explain their unusual behavior. We present extensive high-resolution photoemission data on a single crystal of PuTe, which has also been proposed as a topological insulator. The new experimental results on this mixed-valent material provide a constraint to the theoretical modeling and new dynamical mean-field theory calculations agree with the experimental results. Comparisons with Pu metal provide new insight in understanding its complex electronic structure.