Do silicene nanoribbons have high carrier mobilities?

摘要

Armchair silicene nanoribbons with width of 9-39 silicon atoms are investigated by using the self-consistent field crystal orbital method based on density functional theory. The carrier mobilities obtained from deformation potential theory oscillate with respect to the width and the values are comparable with those the graphene nanoribbons have. The buckled structure, hydrogen saturation, edge reconstruction as well as edge roughness decrease the carrier mobilities which are explained with the aid of crystal orbitals.