Independence of the spin current from the Néel vector orientation in antiferromagnet CoO
Abstract
Spin pumping from ferromagnetic Fe into antiferromagnetic CoO across a Ag spacer layer was studied using ferromagnetic resonance (FMR) in Py/CoO/Ag/Fe/Ag(001). The thin Py film on top of CoO permits an alignment of the CoO Neél vector through field cooling in two otherwise equivalent [110] and [110] crystalline axes which are parallel and perpendicular to the Fe magnetization direction, respectively. Fe FMR linewidth is measured as a function of Ag thickness in 10-20-GHz frequency range and in 180-330 K temperature range. Furthermore, we find that there exists an anisotropy in the Fe FMR damping for parallel and perpendicular alignment of the Fe and CoO spins. However, such anisotropic damping exists only at thin Ag thickness where there exists a magnetic interlayer coupling between Fe and CoO, and vanishes at thick Ag thickness where the interlayer coupling becomes negligible but permitting spin-current transmission into CoO. Our result indicates the absence of anisotropic spin current for parallel and perpendicular alignment of the Fe and CoO spin axes.
- Authors:
-
[2];
[5];
[1]
- Univ. of California, Berkeley, CA (United States)
- Univ. of Science and Technology of China, Hefei (China). Hefei National Lab. for Physical Sciences at the Microscale
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- King Abdullah Univ. of Science and Technology (KAUST), Thuwal (Saudi Arabia)
- Korea Research Inst. of Standards and Science, Yuseong (South Korea)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Research Foundation of Korea (NRF); King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR)
- OSTI Identifier:
- 1775389
- Grant/Contract Number:
- AC02-05CH11231; OSR-2017-CRG6-3427; 2015M3D1A1070467; 2015R1A5A1009962
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 101; Journal Issue: 22; 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; antiferromagnetism; magnetism; spin pumping; spintronics; heterostructures; ferromagnetic resonance; magneto-optical Kerr effect; x-ray magnetic circular dichroism
Citation Formats
Yang, M., Li, Q., Hou, D., Shafer, P., N'Diaye, A. T., Klewe, C., Wang, T. Y., Zhang, Xixiang, Hwang, C., and Qiu, Z. Q. Independence of the spin current from the Néel vector orientation in antiferromagnet CoO. United States: N. p., 2020.
Web. doi:10.1103/physrevb.101.224418.
Yang, M., Li, Q., Hou, D., Shafer, P., N'Diaye, A. T., Klewe, C., Wang, T. Y., Zhang, Xixiang, Hwang, C., & Qiu, Z. Q. Independence of the spin current from the Néel vector orientation in antiferromagnet CoO. United States. https://doi.org/10.1103/physrevb.101.224418
Yang, M., Li, Q., Hou, D., Shafer, P., N'Diaye, A. T., Klewe, C., Wang, T. Y., Zhang, Xixiang, Hwang, C., and Qiu, Z. Q. Thu .
"Independence of the spin current from the Néel vector orientation in antiferromagnet CoO". United States. https://doi.org/10.1103/physrevb.101.224418. https://www.osti.gov/servlets/purl/1775389.
@article{osti_1775389,
title = {Independence of the spin current from the Néel vector orientation in antiferromagnet CoO},
author = {Yang, M. and Li, Q. and Hou, D. and Shafer, P. and N'Diaye, A. T. and Klewe, C. and Wang, T. Y. and Zhang, Xixiang and Hwang, C. and Qiu, Z. Q.},
abstractNote = {Spin pumping from ferromagnetic Fe into antiferromagnetic CoO across a Ag spacer layer was studied using ferromagnetic resonance (FMR) in Py/CoO/Ag/Fe/Ag(001). The thin Py film on top of CoO permits an alignment of the CoO Neél vector through field cooling in two otherwise equivalent [110] and [110] crystalline axes which are parallel and perpendicular to the Fe magnetization direction, respectively. Fe FMR linewidth is measured as a function of Ag thickness in 10-20-GHz frequency range and in 180-330 K temperature range. Furthermore, we find that there exists an anisotropy in the Fe FMR damping for parallel and perpendicular alignment of the Fe and CoO spins. However, such anisotropic damping exists only at thin Ag thickness where there exists a magnetic interlayer coupling between Fe and CoO, and vanishes at thick Ag thickness where the interlayer coupling becomes negligible but permitting spin-current transmission into CoO. Our result indicates the absence of anisotropic spin current for parallel and perpendicular alignment of the Fe and CoO spin axes.},
doi = {10.1103/physrevb.101.224418},
journal = {Physical Review B},
number = 22,
volume = 101,
place = {United States},
year = {Thu Jun 11 00:00:00 EDT 2020},
month = {Thu Jun 11 00:00:00 EDT 2020}
}
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