Two-photon photoemission from CoO layers on Ir(1 0 0).

Abstract

Two-photon photoelectron spectroscopy is used to study the unoccupied electronic states of cobalt oxide layers on Ir(1 0 0). For thicker layers of (1 0 0) orientation the conduction band minimum is found 2 eV above the Fermi level. Layers with (1 1 1) orientation and thickness ≤4 bilayers show a peak around 3.4 eV energy and no evidence for the conduction… (More)
DOI: 10.1088/0953-8984/28/5/055001

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