The influence of the δ-doping on the electron transport with the finite periodic magnetic barriers nanostructure

Abstract

Periodic nanostructure is a novel method to manipulate the electronic properties in electronics. An efficient method in this paper is proposed to judge whether m identical periods' magnetic nanostructure is a periodic structure by judging whether its physical structure and its magnetic vector potential structure both keep periodic. By investigating the influence of the δ-doping potential on the electron transport properties with m identical periods' magnetic barrier nanostructure of InAs system, it shows that, firstly, the resonant peak of transmission probability, conductance, and spin polarization has been induced by splitting into (2m - 1) folds with m units nanostructure, respectively, especially when the resonant peak of transmission probability is almost close to 1 as the incident energy is lower; secondly, the height of δ-doping potential has an extensive influence on the resonant peak of transmission probability, which the resonant peak will be more dependent of the height of δ-doping potential increasing. Meanwhile, the conductance will be decreased with the height of δ-doping potential increasing.