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Related Experiment Video

Updated: May 23, 2026

Fabrication of Spatially Confined Complex Oxides
08:45

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

Polymorphic phase engineering of flat plasmons in a correlated oxide.

Yangyu Zhu1, Xuejin Zhang1, Jaeseok Son2

  • 1School of Physics, Shandong University, Jinan 250100, China. zmw@sdu.edu.cn.

Nanoscale
|May 22, 2026
PubMed
Summary

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Researchers engineered flat plasmons in titanium sesquioxide (Ti2O3) by tuning electronic correlations. This breakthrough enables manipulation of flat plasmons in strongly correlated systems for advanced optical devices.

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Optics

Background:

  • Flat plasmons, exhibiting dispersionless and long-lived behavior, are crucial for advanced imaging and nonlinear optics.
  • Conventional flat plasmons are limited to low-dimensional systems and restricted momentum regions (< ~0.7 Å⁻¹).

Purpose of the Study:

  • To report the emergence and engineering of flat plasmons in the strongly correlated oxide Ti₂O₃.
  • To investigate the role of electronic correlation effects in manipulating plasmon properties.

Main Methods:

  • Polymorphic phase-engineering of Ti₂O₃ through epitaxial stabilization.
  • Tuning the on-site Coulomb interaction (U) to modify plasmon energy fluctuations (Δωₚ).

Main Results:

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Related Experiment Videos

Last Updated: May 23, 2026

Fabrication of Spatially Confined Complex Oxides
08:45

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

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 Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition
10:27

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition

Published on: February 27, 2013

  • Demonstrated highly anisotropic and long-lived flat plasmons in Ti₂O₃ at higher momentum regions (> 0.7 Å⁻¹).
  • Established a direct relationship between increased electronic correlation (U) and reduced plasmon energy fluctuation (Δωₚ), leading to flatter plasmons.
  • Attributed plasmon flattening to renormalized bandwidth of Hubbard bands.

Conclusions:

  • Electronic correlations in strongly correlated oxides can be leveraged to engineer flat plasmons.
  • This provides a practical strategy for manipulating flat plasmons, advancing plasmonic and nonlinear optical device development.