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Updated: Jun 25, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
Published on: April 12, 2018
Switching Ti valence in SrTiO3 by a dc electric field
T Leisegang1, H Stöcker, A A Levin
1Institut für Strukturphysik, Technische Universität Dresden, 01062 Dresden, Germany. leisegang@physik.tu-dresden.de
Abstract:
A (001) SrTiO3 wafer has been investigated in situ at room temperature under application of a static electric field of varying polarity by fluorescence x-ray absorption near edge structure (XANES) analysis at the Sr-K and Ti-K absorption edges. The XANES spectra show a clear shift of the Ti-K absorption edge energy. The shift is attributed to a change of the Ti valence state in a volume invoked by diffusion of the oxygen ions and vacancies. No shift was observed for the Sr-K absorption edge energy. Theoretical calculations support these findings.
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