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Separate electron-hole confinement in composite InAsyP1-y/GaxIn1-xAs quantum wells

Identifieur interne : 000607 ( Russie/Analysis ); précédent : 000606; suivant : 000608

Separate electron-hole confinement in composite InAsyP1-y/GaxIn1-xAs quantum wells

Auteurs : RBID : Pascal:03-0508624

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English descriptors

Abstract

Composite double quantum wells made from materials with a type-II band line-up have been grown to realize separate confinement in real space for electrons and holes. We have observed a substantial blue shift of the lowest energy transition in such composite double quantum wells. The photocurrent measurements demonstrate a linear Stark shift due to the separate confinement in real space for electrons and holes. The charge separation is up to 45 A in the strain balanced InAs0.42P0.58/Ga0.67In0.33As samples. The experimental results agree very well with calculations in the framework of Bir-Pikus strain Hamiltonian.

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Pascal:03-0508624

Le document en format XML

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<title xml:lang="en" level="a">Separate electron-hole confinement in composite InAs
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<name sortKey="Silov, A Yu" uniqKey="Silov A">A. Yu. Silov</name>
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<term>Gallium arsenides</term>
<term>Hamiltonians</term>
<term>Indium Arsenides phosphides</term>
<term>Indium arsenides</term>
<term>Localized exciton</term>
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<term>Photoconductivity</term>
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<term>Effet Stark</term>
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<div type="abstract" xml:lang="en">Composite double quantum wells made from materials with a type-II band line-up have been grown to realize separate confinement in real space for electrons and holes. We have observed a substantial blue shift of the lowest energy transition in such composite double quantum wells. The photocurrent measurements demonstrate a linear Stark shift due to the separate confinement in real space for electrons and holes. The charge separation is up to 45 A in the strain balanced InAs
<sub>0.42</sub>
P
<sub>0.58</sub>
/Ga
<sub>0.67</sub>
In
<sub>0.33</sub>
As samples. The experimental results agree very well with calculations in the framework of Bir-Pikus strain Hamiltonian.</div>
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<sub>0.42</sub>
P
<sub>0.58</sub>
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