Electrical control of the exchange spring in antiferromagnetic metals

Yuyan Wang; Xiang Zhou; Cheng Song; Yinuo Yan; Shiming Zhou; Guangyue Wang; Chao Chen; Fei Zeng; Feng Pan

doi:10.1002/adma.201405811

Electrical control of the exchange spring in antiferromagnetic metals

Adv Mater. 2015 May 27;27(20):3196-201. doi: 10.1002/adma.201405811. Epub 2015 Apr 11.

Authors

Yuyan Wang¹, Xiang Zhou², Cheng Song¹, Yinuo Yan¹, Shiming Zhou², Guangyue Wang¹, Chao Chen¹, Fei Zeng¹, Feng Pan¹

Affiliations

¹ Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
² Shanghai Key Laboratory of Special Artificial Microstructure and Pohl Institute of Solid State, Physics and School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China.

PMID: 25865870
DOI: 10.1002/adma.201405811

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.

Keywords: antiferromagnet spintronics; electrical control of exchange springs; exchange bias.