GaAs

Fotónica y nanotecnología
In this paper we deal with the intimate connection between photonics and nanotechnology. We will briefly review the optical methods to …
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Electric Field Enhancement of the Rabi Splitting in a Superlattice-Microcavity System
We have observed a large coupling between the photonic mode of a microcavity and Stark-localized excitons from a superlattice embedded …
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Excitonic effects in the miniband formation of graded-gap superlattices
The formation of an electron miniband has been investigated in two differently realized graded-gap superlattices (SL’s). The …
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Wannier-Stark localization and Bloch oscillations
This chapter discusses the effects of an electric field on the electronic and optical properties of semiconductor superlattices. Here …
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Wannier-Stark localization and Bloch oscillations
Lateral localization in strained InGaAs/GaAs quantum wells
in Advances in Microcrystalline and Nanocrystalline Semiconductors - 1996, R. W. Collins, P. M. Fauchet, I. Shimizu, J. C. Vial, T. Shimada, and A. P. Alivisatos, ed. (Materials Research Society, Pittsburgh, 1997)
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Lateral localization in strained InGaAs/GaAs quantum wells
Miniband formation at finite electric fields in a graded-gap superlattice
We have investigated a graded-gap superlattice with differential photocurrent spectroscopy at 77 K. The lowest conduction subband …
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Local origin of photocurrent in semiconductor superlattices
To trace the origin of photocurrent (PC) in semiconductor superlatices, we have studied the PC spectra as a function of the applied …
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Change in dimensionality of superlattice excitons induced by an electric field
We have observed an electric-field-induced change in the dimensionality of excitons in superlattices, from three to quasi-two …
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Coherence and localization in semiconductor superlattices under electric fields
Using optical techniques, we have demonstrated that the quantum coherence of electron states in GaAs/GaAlAs superlattices under …
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Interactions between extended and localized states in superlattices
We have observed electric-field-induced interactions between the extended states of a (40 Å)-(15 Å) GaAs-Ga0.65Al0.35As superlattice …
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