Pramana | |
Electron-confined LO-phonon scattering in GaAs-Al0.45Ga0.55As superlattice | |
D Abouelaoualim11  | |
[1] L.P.S.C.M., Physics Department, Faculty of Sciences-Semlalia, BP:2390, 40000, Marrakech, Morocco$$ | |
关键词: Confined LO-phonon; scattering; superlattice; miniband; relaxation time.; | |
DOI : | |
学科分类:物理(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
We develop a theoretical model to the scattering time due to the electron-confined LO-phonon in GaAs-Alð‘¥Ga1-ð‘¥As superlattice taking into account the sub-band parabolicity. Using the new analytic wave function of electron miniband conduction of superlattice and a reformulation slab model for the confined LO-phonon modes, an expression for the electron-confined LO-phonon scattering time is obtained. In solving numerically a partial differential equation for the phonon generation rate, our results show that for ð‘¥ = 0.45, the LO-phonon in superlattice changes from a bulk-like propagating mode to a confined mode. The dispersion of the relaxation time due to the emission of confined LO-phonons depends strongly on the total energy.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040497043ZK.pdf | 425KB | download |