2017
DOI: 10.1063/1.4985388
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Ab initio simulation study of defect assisted Zener tunneling in GaAs diode

Abstract: The band to band tunneling of defective GaAs nano-junction is studied by using the non-equilibrium Green’s function formalism with density functional theory. Aiming at performance improvement, two types of defect-induced transport behaviors are reported in this work. By examining the partial density of states of the system, we find the substitutional defect OAs that locates in the middle of tunneling region will introduce band-gap states, which can be used as stepping stones to increase the tunneling current n… Show more

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