Oscillator strength of a two-dimensional D − ion in magnetic fields

• Published in: Solid state communications Vol. 129; no. 5; pp. 325 - 330
• Main Authors: Santos, A.S., Ioriatti, L., De Groote, J.J.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.02.2004; Elsevier
• Subjects: A. Quantum wells; C. Impurities in semiconductors; Condensed matter: structure, mechanical and thermal properties; D. Electronic states (localized); Exact sciences and technology; General theory; Lattice dynamics; Physics; D. Electronic states (localized); A. Quantum wells; 78.66.−w; 73.20.Hb; C. Impurities in semiconductors; Adiabatic approximation; Impurities; Oscillator strengths; Magnetic field effects; Theoretical study; Angular variation; Hyperspherical coordinate; Schroedinger equation; Two dimensional model; Deuterium additions; Ab initio calculations; Matrix elements
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2003.10.011

In the present paper we determine the oscillator strength of two-dimensional (2D) D − ions under the influence of a static magnetic field. The results are important for the analysis of the optical transitions observed in semiconductor quantum wells. We have applied the ab initio procedure Hyperspherical Adiabatic Approach, based on the use of hyperspherical coordinates. This approach uses an adiabatic separation of the total wave function that allows accurate energies determination from molecular-like potential curves. The convergence is obtained in a systematic way by the inclusion of non-adiabatic couplings without the need of adjustable parameters.