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Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system
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| Zeitschriftentitel: | Journal of Applied Physics |
|---|---|
| Personen und Körperschaften: | |
| In: | Journal of Applied Physics, 96, 2004, 10, S. 5576-5581 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Sahu, T. Sahu, T. |
|---|---|
| author |
Sahu, T. |
| spellingShingle |
Sahu, T. Journal of Applied Physics Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system General Physics and Astronomy |
| author_sort |
sahu, t. |
| spelling |
Sahu, T. 0021-8979 1089-7550 AIP Publishing General Physics and Astronomy http://dx.doi.org/10.1063/1.1794900 <jats:p>We study low temperature electron transport mobility μn in a GaAs∕InxGa1−xAs double quantum well structure. Both the extreme barriers are δ doped with Si so that the electrons diffuse into the adjacent wells (InGaAs layers) forming two sheets of two-dimensional electron gas separated by a thin central barrier. The subband electron wave functions and energy levels of the coupled quantum well system are obtained numerically as a function of well width and barrier width. We have considered the effect of alloy disorder scattering and impurity scattering on μn. The screening of the scattering potentials by the 2D-electrons is obtained in terms of the static dielectric response function within the random phase approximation. The effect of screening on the alloy disorder potential, which has been normally neglected due to short range nature of the potential, has been analyzed. We have also studied the effects of the intersubband scattering and coupling of wave functions through the barrier on μn for the multisubband system.</jats:p> Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system Journal of Applied Physics |
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Journal of Applied Physics |
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| title |
Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_unstemmed |
Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_full |
Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_fullStr |
Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_full_unstemmed |
Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_short |
Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_sort |
intersubband-coupling and screening effects on the electron subband mobility in a gaas∕inxga1−xas delta-doped double quantum well system |
| topic |
General Physics and Astronomy |
| url |
http://dx.doi.org/10.1063/1.1794900 |
| publishDate |
2004 |
| physical |
5576-5581 |
| description |
<jats:p>We study low temperature electron transport mobility μn in a GaAs∕InxGa1−xAs double quantum well structure. Both the extreme barriers are δ doped with Si so that the electrons diffuse into the adjacent wells (InGaAs layers) forming two sheets of two-dimensional electron gas separated by a thin central barrier. The subband electron wave functions and energy levels of the coupled quantum well system are obtained numerically as a function of well width and barrier width. We have considered the effect of alloy disorder scattering and impurity scattering on μn. The screening of the scattering potentials by the 2D-electrons is obtained in terms of the static dielectric response function within the random phase approximation. The effect of screening on the alloy disorder potential, which has been normally neglected due to short range nature of the potential, has been analyzed. We have also studied the effects of the intersubband scattering and coupling of wave functions through the barrier on μn for the multisubband system.</jats:p> |
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| author | Sahu, T. |
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| description | <jats:p>We study low temperature electron transport mobility μn in a GaAs∕InxGa1−xAs double quantum well structure. Both the extreme barriers are δ doped with Si so that the electrons diffuse into the adjacent wells (InGaAs layers) forming two sheets of two-dimensional electron gas separated by a thin central barrier. The subband electron wave functions and energy levels of the coupled quantum well system are obtained numerically as a function of well width and barrier width. We have considered the effect of alloy disorder scattering and impurity scattering on μn. The screening of the scattering potentials by the 2D-electrons is obtained in terms of the static dielectric response function within the random phase approximation. The effect of screening on the alloy disorder potential, which has been normally neglected due to short range nature of the potential, has been analyzed. We have also studied the effects of the intersubband scattering and coupling of wave functions through the barrier on μn for the multisubband system.</jats:p> |
| doi_str_mv | 10.1063/1.1794900 |
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| imprint | AIP Publishing, 2004 |
| imprint_str_mv | AIP Publishing, 2004 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161 |
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| language | English |
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| physical | 5576-5581 |
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| series | Journal of Applied Physics |
| source_id | 49 |
| spelling | Sahu, T. 0021-8979 1089-7550 AIP Publishing General Physics and Astronomy http://dx.doi.org/10.1063/1.1794900 <jats:p>We study low temperature electron transport mobility μn in a GaAs∕InxGa1−xAs double quantum well structure. Both the extreme barriers are δ doped with Si so that the electrons diffuse into the adjacent wells (InGaAs layers) forming two sheets of two-dimensional electron gas separated by a thin central barrier. The subband electron wave functions and energy levels of the coupled quantum well system are obtained numerically as a function of well width and barrier width. We have considered the effect of alloy disorder scattering and impurity scattering on μn. The screening of the scattering potentials by the 2D-electrons is obtained in terms of the static dielectric response function within the random phase approximation. The effect of screening on the alloy disorder potential, which has been normally neglected due to short range nature of the potential, has been analyzed. We have also studied the effects of the intersubband scattering and coupling of wave functions through the barrier on μn for the multisubband system.</jats:p> Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system Journal of Applied Physics |
| spellingShingle | Sahu, T., Journal of Applied Physics, Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system, General Physics and Astronomy |
| title | Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_full | Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_fullStr | Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_full_unstemmed | Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_short | Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| title_sort | intersubband-coupling and screening effects on the electron subband mobility in a gaas∕inxga1−xas delta-doped double quantum well system |
| title_unstemmed | Intersubband-coupling and screening effects on the electron subband mobility in a GaAs∕InxGa1−xAs delta-doped double quantum well system |
| topic | General Physics and Astronomy |
| url | http://dx.doi.org/10.1063/1.1794900 |