Electrical control of the exchange spring in antiferromagnetic metals.

Wang, Yuyan; Zhou, Xiang; Song, Cheng; Yan, Yinuo; Zhou, Shiming; Wang, Guangyue; Chen, Chao; Zeng, Fei et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

Electrical control of the exchange spring in antiferromagnetic metals is obtained in [Co/Pt]/IrMn Hall devices by using an ionic liquid, where the exchange spring could transfer the "force" and enable a deeper modulation depth in the IrMn. This work provides a new approach toward electrical modulation of the spin structures in metallic antiferromagnets, which should be significant in advancing the development of low-power-consumption antiferromagnet (AFM) spintronics.