A solver for the two-dimensional (2-D) Schrodinger equation based on the k-
space representation of the solution has been developed and applied to the
simulation of 2-D electrostatic quantum effects in nano-scale MOS transisto
rs, This paper presents the mathematical framework of the simulator, addres
ses the related accuracy and efficiency problems, and discusses the simulat
ions performed to validate it. Furthermore, the 2-D quantum effects observe
d in the simulation of charge densities in tens-hundreds nanometer scale MO
S structures are described.