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Title: Correlation between the Dzyaloshinskii-Moriya interaction and spin-mixing conductance at an antiferromagnet/ferromagnet interface

Abstract

The rich interaction phenomena at antiferromagnet (AFM)/ferromagnet (FM) interfaces are key ingredients in AFM spintronics, where many underlying mechanisms remain unclear. Here in this paper we report on a correlation observed between the interfacial Dzyaloshinskii-Moriya interaction (DMI) DS and effective spin-mixing conductance g$$↑↓\atop{eff}$$ at the IrMn/CoFeB interface. Both DS and g$$↑↓\atop{eff}$$ are quantitatively determined with Brillouin light-scattering measurements, and increase with IrMn thickness in the range of 2.5 ~ 7.5 nm. Such correlation likely originates from the AFM-states-mediated spin-flip transitions in the FM, which promote both the interfacial DMI and spin pumping effect. Our findings provide deeper insight into the AFM-FM interfacial coupling for future spintronic design.

Authors:
 [1];  [2];  [3];  [1];  [1];  [4];  [3];  [5];  [4]
  1. Univ. of California, Santa Barbara, CA (United States). Dept. of Electrical and Computer Engineering
  2. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics
  3. Univ. of California, Los Angeles, CA (United States). Dept. of Electrical Engineering
  4. Univ. of Texas, Austin, TX (United States). Dept. of Physics, Center for Complex Quantum Systems
  5. Univ. of California, Los Angeles, CA (United States). Dept. of Electrical Engineering, and Dept. of Physics
Publication Date:
Research Org.:
Univ. of California, Riverside, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1474502
Alternate Identifier(s):
OSTI ID: 1473995
Grant/Contract Number:  
SC0012670
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 10; 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

Citation Formats

Ma, Xin, Yu, Guoqiang, Razavi, Seyed A., Chang, Liang, Deng, Lei, Chu, Zhaodong, He, Congli, Wang, Kang L., and Li, Xiaoqin. Correlation between the Dzyaloshinskii-Moriya interaction and spin-mixing conductance at an antiferromagnet/ferromagnet interface. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.104428.
Ma, Xin, Yu, Guoqiang, Razavi, Seyed A., Chang, Liang, Deng, Lei, Chu, Zhaodong, He, Congli, Wang, Kang L., & Li, Xiaoqin. Correlation between the Dzyaloshinskii-Moriya interaction and spin-mixing conductance at an antiferromagnet/ferromagnet interface. United States. doi:10.1103/PhysRevB.98.104428.
Ma, Xin, Yu, Guoqiang, Razavi, Seyed A., Chang, Liang, Deng, Lei, Chu, Zhaodong, He, Congli, Wang, Kang L., and Li, Xiaoqin. Wed . "Correlation between the Dzyaloshinskii-Moriya interaction and spin-mixing conductance at an antiferromagnet/ferromagnet interface". United States. doi:10.1103/PhysRevB.98.104428. https://www.osti.gov/servlets/purl/1474502.
@article{osti_1474502,
title = {Correlation between the Dzyaloshinskii-Moriya interaction and spin-mixing conductance at an antiferromagnet/ferromagnet interface},
author = {Ma, Xin and Yu, Guoqiang and Razavi, Seyed A. and Chang, Liang and Deng, Lei and Chu, Zhaodong and He, Congli and Wang, Kang L. and Li, Xiaoqin},
abstractNote = {The rich interaction phenomena at antiferromagnet (AFM)/ferromagnet (FM) interfaces are key ingredients in AFM spintronics, where many underlying mechanisms remain unclear. Here in this paper we report on a correlation observed between the interfacial Dzyaloshinskii-Moriya interaction (DMI) DS and effective spin-mixing conductance g$↑↓\atop{eff}$ at the IrMn/CoFeB interface. Both DS and g$↑↓\atop{eff}$ are quantitatively determined with Brillouin light-scattering measurements, and increase with IrMn thickness in the range of 2.5 ~ 7.5 nm. Such correlation likely originates from the AFM-states-mediated spin-flip transitions in the FM, which promote both the interfacial DMI and spin pumping effect. Our findings provide deeper insight into the AFM-FM interfacial coupling for future spintronic design.},
doi = {10.1103/PhysRevB.98.104428},
journal = {Physical Review B},
number = 10,
volume = 98,
place = {United States},
year = {2018},
month = {9}
}

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    Works referencing / citing this record:

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