Field effects in self-consistent transport calculations for narrow split-gate structures

✍ Scribed by Henry K. Harbury; Wolfgang Porod; Craig S. Lent

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 434 KB
• Volume: 11
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1016/0749-6036(92)90250-9

✦ Synopsis

We study local potential variations due to self-consistent space-charge effects in calculations of coherent transport in narrow split-gate structures. We present a numerical technique based on calculating the Hartree potential from the charge density obtained by solving the two-dimensional effective-mass Schrtinger equation for scattering states, and from the bound charge density obtained from a semi-classical Thomas-Fermi screening model. This method allows us to obtain the local self-consistent potential variations close to scattering centers exposed to an incident flux of electrons.