Related Experiment Video
Updated: Jul 8, 2025
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.1K
Highly Energy-Efficient Spin Current Generation in SrIrO3 by Manipulating the Octahedral Rotation
Qihan Zhang1, Shu Shi1, Zhenyi Zheng1
1Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore.
ACS Applied Materials & Interfaces
|December 20, 2023
Summary
Epitaxial strain significantly enhances spin-orbit torque (SOT) efficiency in complex oxide heterostructures. Modulating strain in SrIrO3/Ni81Fe19 bilayers improved SOT efficiency tenfold, advancing spintronic device applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Materials with strong spin-orbit coupling (SOC) are crucial for energy-efficient spintronic devices.
- Transition-metal perovskite oxides exhibit efficient charge-spin interconversion due to strong SOC.
Purpose of the Study:
- To investigate the influence of epitaxial strain on spin-orbit torque (SOT) efficiency.
- To explore the relationship between octahedral rotation and SOT efficiency in SrIrO3/Ni81Fe19 bilayers.
Main Methods:
- Systematic investigation of SOT efficiency in SrIrO3 (SIO)/Ni81Fe19 (Py) bilayers.
- Modulation of epitaxial strain using various substrates.
Main Results:
- SOT efficiency is strongly correlated with octahedral rotation in SIO.
- Epitaxial strain improved SOT efficiency by a factor of 10, from 0.15 to 1.45.
- Demonstrated a 10-fold enhancement in SOT efficiency.
Conclusions:
- Modulating epitaxial strain is an effective strategy to control SOT efficiency in complex oxide heterostructures.
- This work facilitates the application of complex oxides in advanced spintronic devices.
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