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Article Dans Une Revue Physical Review B Année : 2021

Photoemission study of pristine and Ni-doped SrTiO 3 thin films

Julien Rault
Patrick Lefevre
Matthias Muntwiler
Ralph Claessen
Ján Minár

Résumé

We combined photoelectron spectroscopy with first-principles calculations to investigate electronic properties of SrTiO3 doped with Ni impurities. High-quality epitaxial pristine SrTiO3 and SrTiO3:Nix films with x =0.06 and 0.12 were prepared by pulsed laser deposition. Electronic band structure calculations for the ground state, as well as one-step model photoemission calculations, which were obtained by means of the Korringa-Kohn-Rostoker Green's function method, predict the formation of localized 3 d -impurity bands in the band gap of SrTiO3 close to the valence band maxima. The measured valence bands at the resonance Ni 2 p excitation and band dispersion confirm these findings.

Dates et versions

hal-03845537 , version 1 (09-11-2022)

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Fatima Alarab, Karol Hricovini, Berengar Leikert, Laurent Nicolaï, Mauro Fanciulli, et al.. Photoemission study of pristine and Ni-doped SrTiO 3 thin films. Physical Review B, 2021, 104 (16), pp.165129. ⟨10.1103/PhysRevB.104.165129⟩. ⟨hal-03845537⟩
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