1T-FeS$_2$$:$ a new type of two-dimensional metallic ferromagnet
Abstract
Discovery of intrinsic two-dimensional (2D) magnetic materials is crucial for understanding the fundamentals of 2D magnetism and realizing next-generation magnetoelectronic and magneto-optical devices. Although significant efforts have been devoted to identifying 2D magnetism by exfoliating bulk magnetic layered materials, seldom studies are performed to synthesize ultra-thin magnetic materials directly for non-layered magnetic materials. Here, we report the successful synthesis of a new type of theoretically proposed 2D metallic ferromagnet 1T FeS2, through the molten-salt-assisted chemical vapor deposition (CVD) method. The long-range 2D ferromagnetic order is confirmed by the observation of a large anomalous Hall effect (AHE) and a hysteretic magnetoresistance. The experimentally detected out-of-plane ferromagnetic ordering is theoretically suported with Stoner criterion. Our findings open up new possibilities to search novel 2D ferromagnets in non-layered compounds and render opportunities for realizing realistic ultra-thin spintronic devices.
Keywords
Cite
@article{arxiv.2202.00252,
title = {1T-FeS$_2$$:$ a new type of two-dimensional metallic ferromagnet},
author = {Govindan Kutty Rajendran Nair and Xiaoyu Ji and Dong Guo and Chao Zhu and Xiaodong Xu and Xinyi Zheng and Xue Yang and Jian Cui and Peiling Li and Xiaowei Wang and Wu Yao and Jiadong Zhou and Teddy Salim and Jian Yi and Fengcai Ma and Changli Yang and Hua Ke and Fanming Qu and Jie Shen and Xiunian Jing and Zheng Liu and Xingji Li and Guangtong Liu and Li Lu},
journal= {arXiv preprint arXiv:2202.00252},
year = {2022}
}