First-principles study of field emission from carbon nanotubes and graphene nanoribbons

作者：Driscoll Joseph A^*; Cook Brandon; Bubin Sergiy; Varga Kalman

来源：Journal of Applied Physics, 2011, 110(2): 024304.

DOI：10.1063/1.3610511

A real-space, real-time implementation of time-dependent density functional theory is used to study electron field emission from nanostructures. Carbon nanotubes and graphene nanoribbons are used as model systems. The calculations show that carbon nanotubes with iron adsorbates have spin-polarized emission currents. Graphene nanoribbons are shown to be good field emitters with spatial variation of the emission current influenced by the presence of passivating hydrogen.

• 出版日期2011-7-15