Publication

Infrared-Absorption Spectra of Accepters Confined in Gaas/Alxga1-Xas Quantum-Wells in the Presence of an External Magnetic-Field

Alfredo Pasquarello
1994
Journal Articles

Abstract

The infrared-absorption spectra of accepters confined in the center of GaAs/A1(x)Ga(1-x)As quantum wells in the presence of an external magnetic field have been calculated. The calculations are based on a four-band effective-mass theory in which the valence-band mixing as well as the mismatch of the band parameters and the dielectric constants between well and barrier materials have been taken into account. The dipole transition rule is assumed for the infrared absorption. The oscillator strengths of allowed transitions between the acceptor ground states and excited states, corresponding to the transitions G, D, and C in bulk GaAs, are calculated for different well widths in the range 50-200 Angstrom with an external magnetic field up to 10 T. The oscillator strength of these infrared acceptor transitions exhibits a strong polarization dependence.

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https://infoscience.epfl.ch/entities/publication/6ab9b094-5596-42f8-aab7-c3bfb27a3a33

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Alfredo Pasquarello
1994
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6ab9b094-5596-42f8-aab7-c3bfb27a3a33

About this result

Related concepts (32)

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In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. Examples of objects that have magnetic moments include loops of electric current (such as electromagnets), permanent magnets, elementary particles (such as electrons), composite particles (such as protons and neutrons), various molecules, and many astronomical objects (such as many planets, some moons, stars, etc).

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Infrared-Absorption Spectra of Accepters Confined in Gaas/Alxga1-Xas Quantum-Wells in the Presence of an External Magnetic-Field

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