Faculté des sciences

Electronic Structure of the YH3 Phase from Angle-Resolved Photoemission Spectroscopy

Hayoz, J. ; Koitzsch, Christian ; Bovet, M. ; Naumovic, D. ; Schlapbach, Louis ; Aebi, Philipp

In: Physical Review Letters, 2003, vol. 90, no. 196804, p. 1-4

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... More

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    Summary
    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.