Velocity saturation in few-layer MoS2 transistor

In this work, we perform an experimental investigation of the saturation velocity in MoS2 transistors. We use a simple analytical formula to reproduce experimental results and to extract the saturation velocity and the critical electric field. Scattering with optical phonons or with remote phonons may represent the main transport-limiting mechanism, leading to saturation velocity comparable to silicon, but much smaller than that obtained in suspended graphene and some III-V semiconductors. (C) 2013 AIP Publishing LLC.