Двофононне наближення у задачах перенормування енергетичного спектра квазічастинки у плоскій напівпровідниковій наноплівці
The effect of electron-phonon interaction on the bottom of ground energy band of an electron in the flat nanofilm with finite quantum well was studied by Green s function method. The analytic expression was obtained for the mass operator that takes into account the two-phonon processes of electron i...
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| Date: | 2011 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Західний науковий центр НАН України і МОН України
2011
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| Series: | Праці наукового товариства ім. Шевченка |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/75287 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Двофононне наближення у задачах перенормування енергетичного спектра квазічастинки у плоскій напівпровідниковій наноплівці / В. Крамар, М. Ткач, М. Курганецький // Праці Наукового товариства ім. Шевченка. — Л., 2011. — Т. 8: Фізичний збірник. — С. 346-353. — Бібліогр.: 18 назв. — укр. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The effect of electron-phonon interaction on the bottom of ground energy band of an electron in the flat nanofilm with finite quantum well was studied by Green s function method. The analytic expression was obtained for the mass operator that takes into account the two-phonon processes of electron interaction with confined phonons in the case of T = 0 K. Taking as an example different materials with different values of a coupling constant it is shown that the two-phonon processes being taken into account make it possible to more carefully determine the magnitude of electron s energy in comparison with the results of one-phonon approach. Percentage error of these two con sequent approaches in the studied nanostructures reaches 1.5 - 14.4% and increases by linear law when the coupling constant increases. |
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