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Title: Ionic Liquid Gating Control of RKKY Interaction in FeCoB/Ru/FeCoB and (Pt/Co) 2/Ru/(Co/Pt) 2 Multilayers.

To overcome the fundamental challenge of the weak natural response of antiferromagnetic materials under a magnetic field, voltage manipulation of antiferromagnetic interaction is developed to realize ultrafast, high-density, and power efficient antiferromagnetic spintronics. Here, we report a low voltage modulation of Ruderman–Kittel–Kasuya–Yosida (RKKY) interaction via ionic liquid gating in synthetic antiferromagnetic multilayers of FeCoB/Ru/FeCoB and (Pt/Co) 2/Ru/(Co/Pt) 2. At room temperature, the distinct voltage control of transition between antiferromagnetic and ferromagnetic ordering is realized and up to 80% of perpendicular magnetic moments manage to switch with a small-applied voltage bias of 2.5 V. We related this ionic liquid gating-induced RKKY interaction modification to the disturbance of itinerant electrons inside synthetic antiferromagnetic heterostructure and the corresponding change of its Fermi level. In conclusion, voltage tuning of RKKY interaction may enable the next generation of switchable spintronics between antiferromagnetic and ferromagnetic modes with both fundamental and practical perspectives.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [3] ;  [1] ;  [4] ;  [5] ;  [1]
  1. Xi’an Jiaotong Univ., Xi’an (China). Electronic Materials Research Lab., Key Lab. of the Ministry of Education & International Center for Dielectric Research
  2. Xi’an Jiaotong Univ., Shaanxi (China). Center for Spintronics and Quantum System, State Key Lab. for Mechanical Behavior of Materials, School of Materials Science and Engineering
  3. Xi’an Jiaotong Univ., Shaanxi (China). Center for Spintronics and Quantum System, State Key Lab. for Mechanical Behavior of Materials, School of Materials Science and Engineering
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; ; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
  5. Beijing Normal Univ., Beijing (China). Center for Advanced Quantum Studies and Dept. of Physics; Hunan Normal Univ., Changsha (China). Synergetic Innovation Center for Quantum Effects and Applications (SICQEA)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; 51472199; 11534015; 51602244
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
OSTI Identifier:
1430096

Yang, Qu, Wang, Lei, Zhou, Ziyao, Wang, Liqian, Zhang, Yijun, Zhao, Shishun, Dong, Guohua, Cheng, Yuxin, Min, Tai, Hu, Zhongqiang, Chen, Wei, Xia, Ke, and Liu, Ming. Ionic Liquid Gating Control of RKKY Interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 Multilayers.. United States: N. p., Web. doi:10.1038/s41467-018-03356-z.
Yang, Qu, Wang, Lei, Zhou, Ziyao, Wang, Liqian, Zhang, Yijun, Zhao, Shishun, Dong, Guohua, Cheng, Yuxin, Min, Tai, Hu, Zhongqiang, Chen, Wei, Xia, Ke, & Liu, Ming. Ionic Liquid Gating Control of RKKY Interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 Multilayers.. United States. doi:10.1038/s41467-018-03356-z.
Yang, Qu, Wang, Lei, Zhou, Ziyao, Wang, Liqian, Zhang, Yijun, Zhao, Shishun, Dong, Guohua, Cheng, Yuxin, Min, Tai, Hu, Zhongqiang, Chen, Wei, Xia, Ke, and Liu, Ming. 2018. "Ionic Liquid Gating Control of RKKY Interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 Multilayers.". United States. doi:10.1038/s41467-018-03356-z. https://www.osti.gov/servlets/purl/1430096.
@article{osti_1430096,
title = {Ionic Liquid Gating Control of RKKY Interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 Multilayers.},
author = {Yang, Qu and Wang, Lei and Zhou, Ziyao and Wang, Liqian and Zhang, Yijun and Zhao, Shishun and Dong, Guohua and Cheng, Yuxin and Min, Tai and Hu, Zhongqiang and Chen, Wei and Xia, Ke and Liu, Ming},
abstractNote = {To overcome the fundamental challenge of the weak natural response of antiferromagnetic materials under a magnetic field, voltage manipulation of antiferromagnetic interaction is developed to realize ultrafast, high-density, and power efficient antiferromagnetic spintronics. Here, we report a low voltage modulation of Ruderman–Kittel–Kasuya–Yosida (RKKY) interaction via ionic liquid gating in synthetic antiferromagnetic multilayers of FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2. At room temperature, the distinct voltage control of transition between antiferromagnetic and ferromagnetic ordering is realized and up to 80% of perpendicular magnetic moments manage to switch with a small-applied voltage bias of 2.5 V. We related this ionic liquid gating-induced RKKY interaction modification to the disturbance of itinerant electrons inside synthetic antiferromagnetic heterostructure and the corresponding change of its Fermi level. In conclusion, voltage tuning of RKKY interaction may enable the next generation of switchable spintronics between antiferromagnetic and ferromagnetic modes with both fundamental and practical perspectives.},
doi = {10.1038/s41467-018-03356-z},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {3}
}