منابع مشابه
Stark-effect scattering in rough quantum wells
A scattering mechanism stemming from the Stark-shift of energy levels by electric fields due to interface roughness in semiconductor quantum wells is identified. This scattering mechanism feeds off interface roughness and electric fields and modifies the well known “sixth-power” law of electron mobility degradation. This work first treats Stark-effect scattering in rough quantum wells as a pert...
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We theoretically investigate the optical properties of the exciton confined in parabolic quantum-dot , with and without electric field, by means of perturbative-variational method. The quantum-dot size enhances the 1s eigenvalue ahd oscillator strength . In smaller dot the relative extension of the exciton wave function is equal t o the size of the dot . The 1s exciton bihding energy is found t...
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In this work we will introduce quantum dots, wires and wells as nanostructure objects with different dimensionality. We will demonstrate the effect of applied external static electric field on the example of semiconductor quantum wells and the appearance of Stark effect. We will briefly allude to some of the optoelectronic devices using Stark effect. The influence of quantum well concentration ...
متن کاملTransverse Stark effect of electrons in GaAs semiconducting quantum boxes
The transverse Stark shift of the electronic energy levels in GaAs semiconducting quantum box is investigated by the use of variational solutions to the effective-mass approximation. It is found an interesting phenomenon that the largest Stark shift is obtained for the electric field directed along the diagonal in cross section of a quantum box, while for a rectangular one, the shift reaches pe...
متن کاملCharacteristic Angles in the Wetting of a Wedge-Shaped Region
The shape of a liquid surface bounded by an acute or obtuse wedge is considered by using classical analysis methods. For acute wedges the two principal curvatures are of the order of the (fixed) mean curvature. But for obtuse wedges, the principal curvatures both diverge as the vertex is approached. The power-law divergence becomes stronger with increasing opening angle. Possible implications o...
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ژورنال
عنوان ژورنال: Physica E: Low-dimensional Systems and Nanostructures
سال: 2005
ISSN: 1386-9477
DOI: 10.1016/j.physe.2005.04.006