Comparison between experiment and calculated band structures for DyN and SmN

Preston, A. R. H.; Granville, S.; Housden, D. H.; Ludbrook, B.; Ruck, B. J.; Trodahl, H. J.; Bittar, A.; Williams, G. V. M.; Downes, J. E.; DeMasi, A.; Zhang, Y.; Smith, K. E.; Lambrecht, W. R. L.

Comparison between experiment and calculated band structures for DyN and SmN

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Description

We investigate the electronic band structure of two of the rare-earth nitrides, DyN and SmN. Resistivity measurements imply that both materials have a semiconducting ground state, and both show resistivity anomalies coinciding with the magnetic transition, despite the different magnetic states in DyN and SmN. X-ray absorption and emission measurements are in excellent agreement with LSDA+U calculations, although for SmN the calculations predict a zero band gap.
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