2021/09/02 by Solomon Demiss, Demiss, Solomon, Raphael Tromer +21
Materials Science · Physics and Astronomy · #2D Materials and Applications #Applied Physics (physics.app-ph) #Electronic and Structural Properties of Oxides #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Quantum Dots Synthesis And Properties #cond-mat.mtrl-sci #physics.app-ph
paper · pdf · doi:10.48550/arxiv.2109.02783
arxiv created 2021/09/02 · openalex publication_date 2021/09/02 · arxiv updated 2021/09/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Magnetism in semiconductor two-dimensional (2D) materials is gaining popularity due to its potential application in memory devices, sensors, spintronic and biomedical applications. Here, 2D Cobalt Telluride (CoTe) has been synthesized from its bulk crystals using a simple and scalable liquid-phase exfoliation method. The atomically thin CoTe shows over four hundred times enhancement in its magnetic saturation values compared to the bulk form. The UV-Vis absorption spectra reveal superior absorption in the high energy region, suggesting a semiconducting nature. Furthermore, we explain bandgap and origin of high magnetic behavior by density functional theory (DFT) calculations. The 2D CoTe shows a larger magnetism compared to bulk CoTe due to the reduced coordination number of the surface atoms, shape anisotropy and surface charge effect.