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Updated: May 22, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

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Ultrafast strain engineering in complex oxide heterostructures.

A D Caviglia1, R Scherwitzl, P Popovich

  • 1Max-Planck Research Group for Structural Dynamics-Center for Free Electron Laser Science, University of Hamburg, Notkestrasse 85, 22607 Hamburg, Germany. Andrea.Caviglia@mpsd.cfel.de

Physical Review Letters
|May 1, 2012
PubMed
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Ultrafast mid-infrared radiation excites lattice vibrations in complex oxide heterostructures, leading to a significant, long-lived increase in electrical conductivity. This method offers new pathways for controlling electronic phases at terahertz rates.

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Optics and Photonics

Background:

  • Complex oxide heterostructures exhibit tunable electronic properties.
  • Controlling conductivity in these materials is crucial for device applications.
  • Lattice vibrations can influence material properties.

Purpose of the Study:

  • To investigate the effect of ultrafast vibrational excitation on the electrical conductivity of complex oxide heterostructures.
  • To explore the potential of mid-infrared radiation for electronic phase control.
  • To demonstrate a novel method for manipulating conductivity in NdNiO(3) thin films.

Main Methods:

  • Femtosecond mid-infrared (mid-IR) spectroscopy was used to excite lattice vibrations.
  • Experiments focused on NdNiO(3) epitaxial thin films on a substrate.

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Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

Related Experiment Videos

Last Updated: May 22, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

Fabrication of Spatially Confined Complex Oxides
08:45

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

Writing and Low-Temperature Characterization of Oxide Nanostructures
06:43

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

  • Electrical conductivity was measured during and after optical excitation.

    • Main Results:

    • A five-order-of-magnitude increase in electrical conductivity was observed in NdNiO(3) films.
    • This conductivity enhancement was long-lived and correlated with a propagating structural distortion.
    • The effect was achieved by tuning the excitation energy to a substrate vibrational mode.

    Conclusions:

    • Ultrafast vibrational excitation provides a powerful tool for transiently controlling electronic properties in oxide heterostructures.
    • This approach offers a new route for electronic phase control at THz repetition rates.
    • The demonstrated method is applicable to a wide range of heterostructures and interfaces.