Electronic Structure of the YH3 Phase from Angle-Resolved Photoemission Spectroscopy
J. Hayoz, C. Koitzsch, M. Bovet, D. Naumovic, L. Schlapbach, P. Aebi
Abstract
Yttrium can be loaded with hydrogen up to high concentrations causing dramatic structural and electronic changes of the host lattice. We report on angle-resolved photoemission experiments of the Y trihydride phase. Most importantly, we find the absence of metal d-bands at the Fermi level and a set of flat, H-induced bands located at much higher binding energy than predicted, indicating an increased electron affinity at H sites.
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