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Synthesis and Characterization of Nitrogen-substituted Nickel Oxide

ORAL

Abstract

Nickel monoxide (NiO) displays emergent properties when substituted by other atoms. We present here the synthesis of NiO thin films with low substitution concentrations of oxygen (O) by nitrogen (N), using NO gas-assisted molecular beam epitaxy method. This technique allows us to have a fine control over the N-doping concentration and maintain a high crystallinity in the films. We measure the changes in the electronic structures of these films introduced by N doping, using x-ray absorption and x-ray photoelectron spectroscopies. We identify a strong interaction between the N and Ni atoms. This leads to drastic changes in the electronic states, magnetic ordering, and conductivity of the films.

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Presenters

  • Simon Godin

    University of British Columbia

Authors

  • Simon Godin

    University of British Columbia

  • Ilya Elfimov

    Quantum Matter Institute, University of British Columbia, University of British Columbia

  • Fengmiao Li

    Quantum Matter Institute, University of British Columbia, University of British Columbia, Quantum Matter Institute

  • Bruce Davidson

    Quantum Matter Institute, University of British Columbia, University of British Columbia, Quantum Matter Institute

  • Ronny Sutarto

    Canadian Light Source, Canadian Light Source, Saskatoon, SK S7N 2V3, Canada

  • George Albert Sawatzky

    Quantum Matter Institute, University of British Columbia, University of British Columbia, Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, Canada

  • Ke Zou

    Quantum Matter Institute, University of British Columbia, University of British Columbia, Department of Physics and Astronomy, University of British Columbia