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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Spin structure in an interfacially coupled epitaxial ferromagnetic oxide heterostructure.
X Ke1, L J Belenky2, V Lauter3
1Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
Physical Review Letters
|August 29, 2014
Summary
The spin structure of a La(0.67)Sr(0.33)MnO(3)/SrRuO(3) heterostructure was investigated. Magnetization reversal depends on the SrRuO(3) layer
Area of Science:
- Condensed matter physics
- Materials science
- Magnetism
Background:
- Exchange-biased heterostructures are crucial for spintronic devices.
- Understanding interfacial magnetic coupling is key to controlling device behavior.
Purpose of the Study:
- To elucidate the spin structure of the La(0.67)Sr(0.33)MnO(3)/SrRuO(3) exchange-biased system.
- To investigate the influence of the biasing layer's spin structure on the biased layer's magnetization reversal.
Main Methods:
- Magnetization measurements
- Polarized neutron reflectometry
Main Results:
- The magnetization reversal of La(0.67)Sr(0.33)MnO(3) is critically dependent on the frozen-in spin structure of the SrRuO(3) layer.
- Observed unexpected double-shifted hysteresis loops in the biased layer.
- Identified a new mechanism for exchange bias involving lateral 180° magnetic domains in the biasing layer.
Conclusions:
- The frozen-in spin structure of the SrRuO(3) layer dictates the exchange bias effect.
- Lateral magnetic domain formation in the biasing layer offers a novel pathway for tuning exchange bias.
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