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arXiv · 2106.00833

A room temperature polar ferromagnetic metal

Hongrui Zhang·Yu-Tsun Shao·Rui Chen·Xiang Chen·Sandhya Susarla·Jonathan T. Reichanadter·Lucas Caretta·Xiaoxi Huang·Nicholas S. Settineri·Zhen Chen·Jingcheng Zhou·Edith Bourret-Courchesne·Peter Ercius·Jie Yao·Jeffrey B. Neaton·David A. Muller·Robert J. Birgeneau·Ramamoorthy Ramesh
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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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Hongrui Zhang, Yu-Tsun Shao, Rui Chen, Xiang Chen, Sandhya Susarla, Jonathan T. Reichanadter, Lucas Caretta, Xiaoxi Huang, Nicholas S. Settineri, Zhen Chen, Jingcheng Zhou, Edith Bourret-Courchesne, Peter Ercius, Jie Yao, Jeffrey B. Neaton, David A. Muller, Robert J. Birgeneau, Ramamoorthy Ramesh. 2021-06-01. A room temperature polar ferromagnetic metal. https://arxiv.org/abs/2106.00833

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