Journal ArticleDOI
Polariton Theory in Electron—Hole Configuration Space. Bulk Solution for a Wannier-Type Model
A. Stahl,I. Balslev +1 more
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TLDR
In this paper, a pair of coupled wave equations for electromagnetic radiation and electron-hole pairs in the Wannier limit is solved for the case of an unbounded crystal, and the solution is discussed with respect to the following phenomena: excitonic resonances, Coulomb enhancement of continuum, local current structure, and spatial dispersion.Abstract:
A pair of coupled wave equations for electromagnetic radiation and electron-hole pairs in the Wannier limit is solved for the case of an unbounded crystal. The solution is discussed with respect to the following phenomena: (i) excitonic resonances, (ii) Coulomb enhancement of continuum, (iii) local current structure, (iv) spatial dispersion.
Das Polariton-System aus Licht und Elektron-Loch-Paaren im Wannier-Grenzfall wird durch ein Paar gekoppelter Wellengleichungen beschrieben. Die Losung dieser Gleichungen, die einem raumlich unbegrenzten Kristall entspricht, wird angegeben und bezuglich folgender Eigenschaften diskutiert: (i) exzitonische Resonanzen, (ii) Coulomb-Verstarkung der Kontinuumsschwelle, (iii) lokale Stromstruktur, (iv) raumliche Dispersion.read more
Citations
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a Quantum-Mechanical Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals.
TL;DR: In this article, it was shown that the ordinary semiclassical theory of the absorption of light by exciton states is not completely satisfactory (in contrast to the case of absorption due to interband transitions).
Journal ArticleDOI
The dispersion of excitons, polaritons and biexcitons in direct-gap semiconductors
TL;DR: In this article, the authors present results obtained for excitons, polaritons and biexcitons in semiconductors with conduction band minimum and valence band maximum at the same point of the Brillouin zone (direct-gap materials) and a band to band transition which is dipole allowed.
Journal ArticleDOI
Nonlinear Optics and the Mott Transition in Semiconductors
TL;DR: In this paper, a comprehensive review of gap shifts, exciton shift, bleaching, and continuum enhancement is presented. But the results for gap shifts and exciton bleaching are not discussed.
Journal ArticleDOI
The role of the biexciton in a dynamic density matrix theory of the semiconductor band edge
Vollrath M. Axt,A. Stahl +1 more
TL;DR: In this paper, the dielectric response of the semiconductor band edge in a dynamic density matrix model is described based on a set of χ3-relevant constitutive equations involving two-, four-and six-point density matrices.
Journal ArticleDOI
On the Dynamical Stark Effect of Excitons. The Low-Field Limit
TL;DR: In this article, the dynamical Stark effect of excitons in semiconductors is treated in three and two dimensions (bulk material and MQW structures, respectively) and theoretical results are presented for the gap function, the excitonic enhancement of the Stark shift, and the induced density.
References
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Journal ArticleDOI
Handbook of Mathematical Functions
Book
The theory of atomic collisions
TL;DR: The perturbation theory has been applied to many-body problems and applications, such as electron collisions with atoms, collisions between atomic systems, nuclear collisions, and certain aspects of two-body systems under relativistic collisions.
Journal ArticleDOI
Intensity of Optical Absorption by Excitons
TL;DR: In this paper, the intensity of optical absorption close to the edge in semiconductors is examined using band theory together with the effective-mass approximation for the excitons, and the experimental results on O and Ge are in good qualitative agreement with direct forbidden and indirect transitions, respectively.
Journal ArticleDOI
Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals
TL;DR: In this paper, it was shown that the ordinary semiclassical theory of the absorption of light by exciton states is not completely satisfactory (in contrast to the case of absorption due to interband transitions).
a Quantum-Mechanical Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals.
TL;DR: In this article, it was shown that the ordinary semiclassical theory of the absorption of light by exciton states is not completely satisfactory (in contrast to the case of absorption due to interband transitions).
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Theoretical and Experimental Effects of Spatial Dispersion on the Optical Properties of Crystals
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