Co3X8 (X = Cl and Br): multiple phases and magnetic properties of the Kagome lattice

Haoyun Bai; Zhichao Yu; Jinxian Feng; Di Liu; Weiqi Li; Hui Pan

doi:10.1039/d3nr04762h

Co₃X₈ (X = Cl and Br): multiple phases and magnetic properties of the Kagome lattice

Nanoscale. 2024 Jan 18;16(3):1362-1370. doi: 10.1039/d3nr04762h.

Authors

Haoyun Bai¹, Zhichao Yu¹, Jinxian Feng¹, Di Liu¹, Weiqi Li², Hui Pan^{1

3}

Affiliations

¹ Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, P.R. China. huipan@um.edu.mo.
² School of Physics, Harbin Institute of Technology, Harbin 150001, P.R. China.
³ Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR, 999078, P. R. China.

PMID: 38131608
DOI: 10.1039/d3nr04762h

Abstract

The unique magnetic properties of two-dimensional (2D) materials have demonstrated huge potential for applications in nanodevices and spintronics. In this work, we propose a new Kagome lattice, Co₃X₈ (X = Cl and Br), based on density functional theory (DFT) calculation. We find that Co/X in Co₃X₈ has spontaneous movement in the lattice, resulting in 156- and 12-phases of Co₃X₈ and diverse magnetic and electronic properties. We show that the magnetic and electronic properties of Co₃X₈ can be engineered by strain, and the magnetic properties of Co₃X₈ are highly related to the spontaneous movement of X. Moreover, the transmission property of 12-Co₃X₈ shows clear angle-dependent features due to the symmetry breaking as caused by the spontaneous movement of X. Our findings may provide not only a possible Kagome lattice with unique properties, but also a strategy for designing nanodevices and for spintronics.