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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Polar skyrmion bubbles are spherical electric solitons with potential for next-generation electronics.
  • Ferroelectric nanostructures offer unique platforms for hosting exotic electronic states.

Purpose of the Study:

  • To explore the formation of polar skyrmion bubbles at room temperature in a specific ferroelectric nanostructure.
  • To investigate the feasibility of low-power data encoding using these solitons.

Main Methods:

  • Fabrication of a ferroelectric nanostructure with an embedded nanodot.
  • Application of bias voltage signals to induce and control skyrmion bubble formation.
  • Analysis of the dielectric response of the nanostructure.

Main Results:

  • Successful formation of polar skyrmion bubbles at room temperature.
  • Demonstration of low-power, single-byte skyrmion bubble encoding at the nanodot location.
  • Observation of a negative nonlocal dielectric response in the nanoscale ultrathin film, driving the process.

Conclusions:

  • The studied nanostructure geometry uniquely hosts various electric solitons.
  • Controlled encoding of polar defects at targeted locations is achievable.
  • This work paves the way for topological ferroelectrics in memory and logic devices.