Can I read Analytic Expression for Electronic Density of States in Random Media with Weak Scattering Potential on EtoBox?

Analytic Expression for Electronic Density of States in Random Media with Weak Scattering Potential by Udomsilp Pinsook; Virulh Sa-yakanit is a scholarly article available to read on EtoBox.

What is Analytic Expression for Electronic Density of States in Random Media with Weak Scattering Potential about?

We evaluate the electronic density of states (DOS) in random media by using the expression from the variational path integral theory. The scattering potential is modeled by a Gaussian function. By imposing the limit of weak scattering, the full spectrum DOS can be approximated by an analytical method. The solution has several features; in the extended states, it is essentially proportional to √ E. In the localized states, it resembles an exponential tail. However, this tail has less population than that of the compatible Kane DOS. The total energy of the system is lowered by E α , depending linearly on the density of scatterers. Our results give good description to the photoluminescence spectra of Si:P and the tunneling measurement of GaAs.

Author

Udomsilp Pinsook; Virulh Sa-yakanit

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0038-1098)

Published

2008

Language

EN