Ionic liquid gating control of RKKY interaction in FeCoB/Ru/FeCoB and (Pt/Co)₂/Ru/(Co/Pt)₂ multilayers.

ABSTRACT: 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

SUBMITTER: Yang Q 

PROVIDER: S-EPMC5841336 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature