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Related Experiment Video

Updated: Jul 24, 2025

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Encoding and Multiplexing Information Signals in Magnetic Multilayers with Fractional Skyrmion Tubes.

Runze Chen1, Yu Li1, Will Griggs1

  • 1Nano Engineering and Spintronic Technologies (NEST) Research Group, Department of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.

ACS Applied Materials & Interfaces
|July 10, 2023
PubMed
Summary

Researchers demonstrate fractional skyrmion tubes (FSTs) in magnetic multilayers for novel spintronic devices. These FSTs show potential as information carriers for advanced data storage and transmission applications.

Keywords:
magnetic multilayersmicromagneticsmultiplexerskyrmionicsskyrmionsspintronics

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Area of Science:

  • Spintronics
  • Condensed Matter Physics
  • Materials Science

Background:

  • Tailored magnetic multilayers (MMLs) enhance skyrmion thermal stability for room-temperature applications.
  • Stable topological spin textures are crucial for expanding spintronic device capabilities.
  • Fractional spin texture states in the vertical dimension of MMLs remain unexplored.

Purpose of the Study:

  • To numerically demonstrate fractional skyrmion tubes (FSTs) in tailored MML systems.
  • To propose FSTs as information bits for encoding signals in MML devices.
  • To investigate the feasibility and thermal stability of distinct FST states for data storage.

Main Methods:

  • Numerical demonstration of FSTs in a tailored MML system.
  • Micromagnetic simulations and theoretical calculations to verify FST states.
  • Investigation of thermal stability of FSTs.

Main Results:

  • Successful demonstration of fractional skyrmion tubes (FSTs) in tailored MMLs.
  • Verification of distinct FST states' feasibility and thermal stability within a single device.
  • Proposal of a multilayer multiplexing device for encoding and transmitting multiple information signals using FSTs.

Conclusions:

  • FSTs are viable information carriers for future spintronic applications.
  • The proposed device enables pipelined information transmission and automatic demultiplexing.
  • FSTs offer a new avenue for high-density data storage and processing in spintronics.