Strain-dependent Magnetic Properties of Two-dimensional Fe₃GaTe₂

Using first principles calculations, we explore the biaxial tensile strain-dependent magnetic properties of monolayer and bilayer Fe₃GaTe₂. Like in the pristine structure, the ferromagnetic ground state is obtained under biaxial tensile strain. Besides, we obtain out of plane magnetic anisotropy in both monolayer and bilayer Fe₃GaTe₂ structures, and the magnetic anisotropy shows increasing tendency with strain. The Curie temperature is suppressed under tensile strain regardless of the enhancement of magnetic anisotropy energy. Both anomalous Hall conductivity and anomalous Nernst conductivity in the bilayer show oscillating behavior under biaxial tensile strain, while the monolayer exhibits less sensitive but still oscillates.