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Excited states of donors bound toXvalleys in GaAs–AlAs type II structures

✍ Scribed by G. Weber; G.N. Carneiro

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
85 KB
Volume
23
Category
Article
ISSN
0749-6036

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✦ Synopsis

We calculate the binding energies of 2s donor states bound to X valleys in type II GaAs-AlAs quantum well structures using an anisotropic variational method which enables us to take into account the effective mass anisotropy and quantum confinement. For a comparative study, we use two sets of effective masses obtained from different measurements [B.

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An investigation of the recombination me
An investigation of the recombination mechanisms associated with the X states in type II GaAs/AlAs superlattices
✍ W.R. Tribe; S.G. Lyapin; P.C. Klipstein; G.W. Smith; R. Grey 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 114 KB

We present a new examination of the phonon modes participating in the recombination processes from type II GaAs/AlAs superlattices. This is achieved through the use of a novel Raman resonance at the type II band gap, which provides a very precise, in-situ measurement technique for the important phon