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A room temperature polar ferromagnetic metal
- Zhang, Hongrui;
- Shao, Yu-Tsun;
- Chen, Rui;
- Chen, Xiang;
- Susarla, Sandhya;
- Reichanadter, Jonathan T;
- Caretta, Lucas;
- Huang, Xiaoxi;
- Settineri, Nicholas S;
- Chen, Zhen;
- Zhou, Jingcheng;
- Bourret-Courchesne, Edith;
- Ercius, Peter;
- Yao, Jie;
- Neaton, Jeffrey B;
- Muller, David A;
- Birgeneau, Robert J;
- Ramesh, Ramamoorthy
- et al.
Abstract
The advent of long-range magnetic order in non-centrosymmetric compounds has stimulated interest in the possibility of exotic spin transport phenomena and topologically protected spin textures for applications in next-generation spintronics. This work reports a novel wurtzite-structure polar magnetic metal, identified as AA'-stacked (Fe0.5Co0.5)5-xGeTe2, which exhibits a Neel-type skyrmion lattice as well as a Rashba-Edelstein effect at room temperature. Atomic resolution imaging of the structure reveals a structural transition as a function of Co-substitution, leading to the polar phase at 50% Co. This discovery reveals an unprecedented layered polar magnetic system for investigating intriguing spin topologies and ushers in a promising new framework for spintronics.
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