Magnetic-field-induced nonparabolicity of exciton dispersion in semiconductors with a nondegenerate valence band

The nonparabolicity of exciton dispersion due to the mixing of the ground and excited states of an exciton in an external magnetic field perpendicular to the direction of its motion is considered. A model describing this effect is proposed and the nonparabolicity for an exciton in a CdTe crystal is...

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Veröffentlicht in:	Journal of experimental and theoretical physics 2011-09, Vol.113 (3), p.502-509
Hauptverfasser:	Loginov, D. K., Chegodaev, A. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis CADMIUM TELLURIDES Classical and Quantum Gravitation CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTALS Electronic Properties of Solid ELECTRONIC STRUCTURE ELECTRONS Elementary Particles EXCITED STATES EXCITONS GROUND STATES Hydrogen MAGNETIC FIELDS Particle and Nuclear Physics Physics Physics and Astronomy Quantum Field Theory Relativity Theory SEMICONDUCTOR MATERIALS Solid State Physics VALENCE
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Zusammenfassung:	The nonparabolicity of exciton dispersion due to the mixing of the ground and excited states of an exciton in an external magnetic field perpendicular to the direction of its motion is considered. A model describing this effect is proposed and the nonparabolicity for an exciton in a CdTe crystal is calculated. The magnetic-field induced exciton nonparabolicity is compared with the effect caused by the nonparabolicity of the electron energy dispersion in the conduction band.
ISSN:	1063-7761 1090-6509
DOI:	10.1134/S1063776111070065