Transparent two-dimensional (2D) magnetic materials may bring intriguing features and are indispensable for transparent electronics. However, it is rare to find both optical transparency and room-temperature ferromagnetism simultaneously in a single 2D material. Herein, we explore the possibility of both these features in 2D WSe/1T-VSe(1ML)/WSeand WSe/1T-VSe(2ML)/WSeheterostructures by taking one monolayer (1ML) and two monolayers (2ML) of 1T-VSeusing first-principles calculations. Further, we investigate anomalous Hall conductivity (AHC) and anomalous Nernst conductivity (ANC) using a maximally localized Wannier function. The WSe/1T-VSe(1ML)/WSeand WSe/1T-VSe(2ML)/WSesystems show Curie temperatures of 328 and 405 K. Under biaxial compressive strain, the magnetic anisotropy of both systems is switched from in-plane to out-of-plane. We find a large AHC of 1.51 e/h and 3.10 e/h in the electron-doped region for strained WSe/1T-VSe(1ML)/WSeand WSe/1T-VSe(2ML)/WSesystems. Furthermore, we obtain a giant ANC of 3.94 AKmin a hole-doped strained WSe/1T-VSe(2ML)/WSesystem at 100 K. Both WSe/1T-VSe(1ML)/WSeand WSe/1T-VSe(2ML)/WSeare optically transparent in the visible ranges with large refractive indices of 3.2-3.4. Our results may suggest that the WSe/1T-VSe/WSestructure possesses multifunctional physical properties and these features can be utilized for spintronics and optoelectronics device applications such as magnetic sensors, memory devices, and transparent magneto-optic devices at room temperature.
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