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Robust half-metallicity and tunable ferromagnetism in two-dimensional VClI2.
- Source :
-
Journal of Applied Physics . 2/28/2023, Vol. 133 Issue 8, p1-9. 9p. - Publication Year :
- 2023
-
Abstract
- Recent theoretical and experimental discoveries of two-dimensional (2D) ferromagnetic (FM) materials have sparked intense interest for their potential applications in spintronics. 2D FM materials with high spin polarization are extremely desirable for future low-dimensional spintronics. Half-metallicity plays a key role in the development of such devices. Here, we reported a new 2D nanomagnet VClI 2 using the first-principles based density functional theory calculations. VClI 2 shows an exciting half-metallic character with a wide half-metallic gap of 0.4 eV. The ground state favors ferromagnetic coupling with a Curie temperature T c of 21 K. The half-metallicity with a FM ground state is further achieved by the application of an external strain and by the combined effects of the strain and the electric field. A phase transition from a half-metallic → semiconductor → metal was further observed under different stimuli with an antiferromagnetic ground state. At E z = 7.5 V/nm and in the presence of η = 5 % strain, the calculated T c is estimated at 35 K, which shows a 67% increment than the T c observed in the unstrained condition. The fascinating and unique properties suggest that VClI 2 is a promising two-dimensional ferromagnetic half-metal, which can be useful for applications in future memory devices to enrich the 2D magnetic materials library. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 133
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 162171816
- Full Text :
- https://doi.org/10.1063/5.0139843