Interface magnetization transition via minority spin injection
Abstract
The interface magnetization of n-type BaTiO3/La0.7Sr0.3MnO3 heterojunction is selectively probed by magnetic second-harmonic generation at 80 K. Additionally, the injection of minority spins at the interface causes a sudden, reversible transition of the spin alignment of interfacial Mn ions from ferromagnetic to antiferromagnetic exchange coupled, while the bulk magnetization remains unchanged. We attribute the emergent interfacial antiferromagnetic interactions to weakening of the double-exchange mechanism caused by the strong Hund’s rule coupling between injected minority spins and local magnetic moments. Lastly, the effect is robust and may serve as a viable route for electronic and spintronic applications.
- Authors:
-
[1];
- College of William and Mary, Williamsburg, VA (United States). Department of Applied Science
- Pennsylvania State Univ., University Park, PA (United States). Department of Physics
- Publication Date:
- Research Org.:
- College of William and Mary, Williamsburg, VA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1465954
- Alternate Identifier(s):
- OSTI ID: 1334680
- Grant/Contract Number:
- FG02-04ER46127; FG02-08ER4653
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 109; Journal Issue: 23; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Fang, F., Zhai, H., Ma, X., Yin, Y. W., Li, Qi, and Lüpke, G. Interface magnetization transition via minority spin injection. United States: N. p., 2016.
Web. doi:10.1063/1.4972035.
Fang, F., Zhai, H., Ma, X., Yin, Y. W., Li, Qi, & Lüpke, G. Interface magnetization transition via minority spin injection. United States. https://doi.org/10.1063/1.4972035
Fang, F., Zhai, H., Ma, X., Yin, Y. W., Li, Qi, and Lüpke, G. Wed .
"Interface magnetization transition via minority spin injection". United States. https://doi.org/10.1063/1.4972035. https://www.osti.gov/servlets/purl/1465954.
@article{osti_1465954,
title = {Interface magnetization transition via minority spin injection},
author = {Fang, F. and Zhai, H. and Ma, X. and Yin, Y. W. and Li, Qi and Lüpke, G.},
abstractNote = {The interface magnetization of n-type BaTiO3/La0.7Sr0.3MnO3 heterojunction is selectively probed by magnetic second-harmonic generation at 80 K. Additionally, the injection of minority spins at the interface causes a sudden, reversible transition of the spin alignment of interfacial Mn ions from ferromagnetic to antiferromagnetic exchange coupled, while the bulk magnetization remains unchanged. We attribute the emergent interfacial antiferromagnetic interactions to weakening of the double-exchange mechanism caused by the strong Hund’s rule coupling between injected minority spins and local magnetic moments. Lastly, the effect is robust and may serve as a viable route for electronic and spintronic applications.},
doi = {10.1063/1.4972035},
journal = {Applied Physics Letters},
number = 23,
volume = 109,
place = {United States},
year = {Wed Dec 07 00:00:00 EST 2016},
month = {Wed Dec 07 00:00:00 EST 2016}
}
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