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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Multibit racetrack memory.

C Deger1

  • 1Marmara University, Physics Dep. 34722, Ziverbey, Istanbul, Turkey.

Nanotechnology
|September 30, 2020
PubMed
Summary
This summary is machine-generated.

This study demonstrates a novel ternary racetrack memory using both domain walls and magnetic skyrmions. This hybrid approach advances many-valued magnetic data storage for future computing technologies.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Racetrack memory offers potential for high-density data storage.
  • Current technologies often face limitations in data storage capacity and efficiency.
  • Magnetic skyrmions and domain walls are promising candidates for advanced memory concepts.

Purpose of the Study:

  • To investigate a hybrid usage of domain walls and skyrmions in racetrack memory.
  • To develop a platform for many-valued magnetic data storage.
  • To realize a ternary racetrack memory without geometrical restrictions.

Main Methods:

  • Numerical simulation using the Landau-Lifshitz-Gilbert equation.
  • Investigating the conversion dynamics between domain walls and magnetic skyrmions.
  • Analyzing the behavior of reverse domains for ternary logic states.

Main Results:

  • Successfully demonstrated the conversion of domain walls to magnetic skyrmions in a plain nanotrack.
  • Achieved a functional ternary racetrack memory.
  • Identified annihilation, conversion, and passing over of reverse domains as three distinct states for ternary logic.

Conclusions:

  • A hybrid domain wall-skyrmion approach is feasible for ternary racetrack memory.
  • This technology paves the way for many-valued magnetic data storage.
  • The developed multibit racetrack memory could significantly impact emergent computing technologies.