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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Programmable Spin-Orbit Torque Multistate Memory and Spin Logic Cell.

Yibo Fan1, Xiang Han1, Xiaonan Zhao1

  • 1School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.

ACS Nano
|March 29, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel IrMn/Co/Ru/CoPt/CoO heterojunction for energy-efficient logic-in-memory computing. This spintronic device offers controllable multistate memory and programmable spin logic functions.

Keywords:
exchange biasmagnetization switchingmultistate memoryspin logicspin−orbit torque

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Area of Science:

  • Spintronics
  • Materials Science
  • Nanotechnology

Background:

  • Spin-orbit torque (SOT) based nonvolatile memory is crucial for energy-efficient reconfigurable logic-in-memory computing.
  • Emerging data-intensive applications demand advanced memory and logic solutions.

Purpose of the Study:

  • To explore the IrMn/Co/Ru/CoPt/CoO heterojunction for multistate memory and programmable spin logic.
  • To investigate the role of controllable exchange bias in device programming.

Main Methods:

  • Fabrication and characterization of the IrMn/Co/Ru/CoPt/CoO heterojunction.
  • Tuning in-plane and out-of-plane exchange bias effects.
  • Demonstration of nonvolatile memory states and logic-in-memory functions.

Main Results:

  • The heterojunction can be programmed into four distinct magnetic configurations.
  • Demonstrated 10 states of nonvolatile memory using controllable exchange bias.
  • Successfully implemented multiple logic-in-memory functions.

Conclusions:

  • The IrMn/Co/Ru/CoPt/CoO multilayer structure is a promising building block for next-generation logic-in-memory devices.
  • This work advances the development of multifunctional multidimensional spintronic devices.