papers AI Learner
The Github is limit! Click to go to the new site.

Quantum-Confined Stark Effect in polar and nonpolar Wurtzite InN/GaN Heterostructures: Influence on Electronic Structure and Compensation by Coulomb Attraction

2013-01-11
Stefan Barthel, Kolja Schuh, Oliver Marquardt, Tilmann Hickel, Jörg Neugebauer, Frank Jahnke, Gerd Czycholl

Abstract

In this paper we systematically analyze the electronic structures of polar and nonpolar wurtzite-InN/GaN quantum dots and their modification due to the quantum-confined Stark effect caused by intrinsic fields. This is achieved by combining continuum elasticity theory with an empirical tight binding model to describe the elastic and single-particle electronic properties in these nitride systems. Based on these results, a many-body treatment is used to determine optical absorption spectra. The efficiency of optical transitions depends on the interplay between the Coulomb interaction and the quantum-confined Stark effect. We introduce an effective confinement potential which represents the electronic structure under the influence of the intrinsic polarization fields and calculate the needed strength of Coulomb interaction to diminish the separation of electrons and holes.

Abstract (translated by Google)
URL

https://arxiv.org/abs/1301.2468

PDF

https://arxiv.org/pdf/1301.2468


Similar Posts

Comments