Biaxial strain and electrical field's effects on the structural, electronic, magnetic, and optical properties of monolayer CrTe

Based on the first-principles calculations, the two-dimensional layers of ferromagnetic materials for monolayer CrTe were investigated. We inspect the effects of electric field and biaxial strain on the characteristics of monolayer CrTe to determine its electrical, magnetic, structural, and optical properties. The monolayer CrTe exhibits half-metallic properties where each unit cell's magnetic moment is equivalent to 4 μB. The magnitude of the energy gap in the spin-up channel decreases with screwing strain and increases with compressive strain under the influence of (Sb). The electric field noticeably impacts the energy gap because the half-metallic feature is destroyed when the electric field value is E = 0.9 V/nm. The optical characteristic examinations determine that the material is a strong contender for use in microelectronic and optoelectronic device applications. •The monolayer CrTe exhibits half-metallic properties.•The material is a strong contender for use in optoelectronic device applications.•The compound CrTe maintains the HM feature in all cases of biaxial strain.