Nonsinusoidal angular dependence of FMR-driven spin current across an antiferromagnet in trilayers
Abstract
Out-of-plane angular (θH) dependence of inverse spin Hall effect (ISHE) voltage (VISHE) generated by spin pumping has been investigated in Y3Fe5O12 (YIG)/NiO/Pt trilayers. A simple sinusoidal angular dependence of VISHE has been viewed as a signature of spin pumping. Surprisingly, we observe an extensive plateau in the VISHE vs. θH plots with a pronounced peak feature at θH ~ 45 to 60 degrees when the measurement temperature is close to the Néel temperature (TN) of NiO. This phenomenon can be understood as arising from the competition between the exchange coupling at the YIG/NiO interface, the easy-plane and in-plane easy-axis anisotropies of NiO, and the effect of the applied magnetic field. We conclude, while insulating antiferromagnetic films can efficiently transmit spin currents and show promise for integration in spintronic devices, the underlying physics of spin ordering and dynamics is richer than currently understood.
- Authors:
-
- The Ohio State Univ., Columbus, OH (United States)
- Univ. of California, Los Angeles, CA (United States)
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1594089
- Alternate Identifier(s):
- OSTI ID: 1494219
- Report Number(s):
- DOE-OSU-20451
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US2101469
- Grant/Contract Number:
- SC0001304; DMR-1420451; FG02-03ER46054; DMR-1742928
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 99; Journal Issue: 6; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Spintronics; Antiferromagnet; Spin Current
Citation Formats
Cheng, Yang, Zarzuela, Ricardo, Brangham, Jack T., Lee, Aidan J., White, Shane, Hammel, P. Chris, Tserkovnyak, Yaroslav, and Yang, Fengyuan. Nonsinusoidal angular dependence of FMR-driven spin current across an antiferromagnet in Y3Fe5O12/NiO/Pt trilayers. United States: N. p., 2019.
Web. doi:10.1103/PhysRevB.99.060405.
Cheng, Yang, Zarzuela, Ricardo, Brangham, Jack T., Lee, Aidan J., White, Shane, Hammel, P. Chris, Tserkovnyak, Yaroslav, & Yang, Fengyuan. Nonsinusoidal angular dependence of FMR-driven spin current across an antiferromagnet in Y3Fe5O12/NiO/Pt trilayers. United States. https://doi.org/10.1103/PhysRevB.99.060405
Cheng, Yang, Zarzuela, Ricardo, Brangham, Jack T., Lee, Aidan J., White, Shane, Hammel, P. Chris, Tserkovnyak, Yaroslav, and Yang, Fengyuan. Mon .
"Nonsinusoidal angular dependence of FMR-driven spin current across an antiferromagnet in Y3Fe5O12/NiO/Pt trilayers". United States. https://doi.org/10.1103/PhysRevB.99.060405. https://www.osti.gov/servlets/purl/1594089.
@article{osti_1594089,
title = {Nonsinusoidal angular dependence of FMR-driven spin current across an antiferromagnet in Y3Fe5O12/NiO/Pt trilayers},
author = {Cheng, Yang and Zarzuela, Ricardo and Brangham, Jack T. and Lee, Aidan J. and White, Shane and Hammel, P. Chris and Tserkovnyak, Yaroslav and Yang, Fengyuan},
abstractNote = {Out-of-plane angular (θH) dependence of inverse spin Hall effect (ISHE) voltage (VISHE) generated by spin pumping has been investigated in Y3Fe5O12 (YIG)/NiO/Pt trilayers. A simple sinusoidal angular dependence of VISHE has been viewed as a signature of spin pumping. Surprisingly, we observe an extensive plateau in the VISHE vs. θH plots with a pronounced peak feature at θH ~ 45 to 60 degrees when the measurement temperature is close to the Néel temperature (TN) of NiO. This phenomenon can be understood as arising from the competition between the exchange coupling at the YIG/NiO interface, the easy-plane and in-plane easy-axis anisotropies of NiO, and the effect of the applied magnetic field. We conclude, while insulating antiferromagnetic films can efficiently transmit spin currents and show promise for integration in spintronic devices, the underlying physics of spin ordering and dynamics is richer than currently understood.},
doi = {10.1103/PhysRevB.99.060405},
journal = {Physical Review B},
number = 6,
volume = 99,
place = {United States},
year = {Mon Feb 11 00:00:00 EST 2019},
month = {Mon Feb 11 00:00:00 EST 2019}
}
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Works referencing / citing this record:
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