| Автор | L D L Brown |
| Автор | M Jaros |
| Дата выпуска | 1988-01-01 |
| dc.description | The authors present pseudopotential calculations of the conduction and valence mini-band non-parabolicity in GaAs-Ga<sub>1-x</sub>Al<sub>x</sub>As superlattices of period approximately 80 AA with various well widths. They find an order of magnitude difference between the non-parabolicity in structures with very narrow approximately 5 AA and wider approximately 40 AA wells and relate this effect to the competition between quantum-size effects and zone-folding enhanced momentum mixing involving higher levels of X character. The authors show that the variation of the non-parabolicity of the electron energy with respect to its wave-vector across the small Brillouin zone takes on a complicated form which arises due to the anti-crossing behaviour of the higher conduction and lower valence mini-band states. Their results show that non-linear properties of semiconductor superlattices are a sensitive function of the form and position of the higher lying mini-bands which are normally ignored in simple models. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Momentum mixing enhancement of band non-parabolicity in GaAs-Ga<sub>1-x</sub>Al<sub>x</sub>As superlattices |
| Тип | paper |
| DOI | 10.1088/0268-1242/3/1/007 |
| Electronic ISSN | 1361-6641 |
| Print ISSN | 0268-1242 |
| Журнал | Semiconductor Science and Technology |
| Том | 3 |
| Первая страница | 40 |
| Последняя страница | 47 |
| Аффилиация | L D L Brown; Dept. of Theor. Phys., Newcastle-upon-Tyne Univ., UK |
| Аффилиация | M Jaros; Dept. of Theor. Phys., Newcastle-upon-Tyne Univ., UK |
| Выпуск | 1 |
