van der Waals epitaxy of Mn-doped MoSe2 on mica

van der Waals epitaxy of Mn-doped MoSe2 on mica

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The magnetic order associated with the degree of freedom of spin in two-dimensional (2D) materials is subjected to intense investigation because of its potential application in 2D spintronics and valley-related magnetic phenomena.We report here a bottom-up strategy using molecular beam epitaxy to grow and dope large-area (cm2) few-layer MoSe2 with Mn as a magnetic dopant.High-quality Basketball - Shoes - Mens Mn-doped MoSe2 layers are obtained for Mn content of less than 5% (atomic).

When increasing the Mn content above 5%, we observe a clear transition from layer-by-layer to cluster growth.Magnetic measurements, involving a transfer process of the cm2-large doped layers on 100-micron-thick silicon substrate, show plausible proof of high-temperature ferromagnetism of 1% and 10% Mn-doped MoSe2.Although we could not point to a correlation between magnetic and electrical properties, we demonstrate that the transfer process described in this report permits Short Sleeve T-Shirts to achieve conventional electrical and magnetic measurements on the doped layers transferred on any substrate.

Therefore, this study provides a promising route to characterize stable ferromagnetic 2D layers, which is broadening the current start-of-the-art of 2D materials-based applications.