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.
@article{arxiv.2106.00833,
title = {A room temperature polar ferromagnetic metal},
author = {Hongrui Zhang and Yu-Tsun Shao and Rui Chen and Xiang Chen and Sandhya Susarla and Jonathan T. Reichanadter and Lucas Caretta and Xiaoxi Huang and Nicholas S. Settineri and Zhen Chen and Jingcheng Zhou and Edith Bourret-Courchesne and Peter Ercius and Jie Yao and Jeffrey B. Neaton and David A. Muller and Robert J. Birgeneau and Ramamoorthy Ramesh},
journal= {arXiv preprint arXiv:2106.00833},
year = {2021}
}