Features of Electron Transport in Two-Dimensional Quantum Superlattices with the Non-Associative Dispersion Law
| Autor: | L. K. Orlov, M. L. Orlov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Physics Field (physics) Superlattice 02 engineering and technology Electron Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Electric field Law 0103 physical sciences Dispersion (optics) 0210 nano-technology Anisotropy Quantum |
| Zdroj: | Semiconductors. 55:319-327 |
| ISSN: | 1090-6479 1063-7826 |
| Popis: | The anisotropy of the conductivity and the shape of the I–V characteristics for a two-dimensional quantum superlattice with the nonharmonic electron dispersion law are investigated for different directions of the current and field applied to the structure relative to the superlattice axes. The anisotropy of the characteristics and the conditions for the occurrence of multivalue I–V characteristics in different current flow modes are discussed. It is shown that the deviation of the electron dispersion law in a two-dimensional quantum superlattice from the harmonic one in a strong dc electric field noticeably affects the shape of the I–V characteristic of a two-dimensional quantum superlattice. Several current peaks in a strong field are caused by both mixing of the current lines for directions orthogonal to the applied field and electron transport over Stark-ladder levels formed in different miniband valleys. |
| Databáze: | OpenAIRE |
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