Large Tunable Spin-to-Charge Conversion in NiFe/Molybdenum Disulfide by Cu Insertion.

Spin-to-charge conversion at the interface between magnetic materials and transition metal dichalcogenides has drawn great interest in the research efforts to develop fast and ultralow power consumption devices for spintronic applications. Here, we report room temperature observations of spin-to-charge conversion arising from the interface of NiFe (Py) and molybdenum disulfide (MoS). This phenomenon can be characterized by the inverse Edelstein effect length (λ), which is enhanced with decreasing MoS thicknesses, demonstrating the dominant role of spin-orbital coupling (SOC) in MoS.

Structural and Optical Properties of Tungsten Disulfide Nanoscale Films Grown by Sulfurization from W and WO.

Tungsten disulfide (WS) was prepared from W metal and WO by ion beam sputtering and sulfurization in a different number of layers, including monolayer, bilayer, six-layer, and nine-layer. To obtain better crystallinity, the nine-layer of WS was also prepared from W metal and sulfurized in a furnace at different temperatures (800, 850, 900, and 950 °C). X-ray diffraction revealed that WS has a 2-H crystal structure and the crystallinity improved with increasing sulfurization temperature, while the crystallinity of WS sulfurized from WO (WS-WO) is better than that sulfurized from W-metal (WS-W).