| Influence of longitudinal electric field on the hot-phonon effect in quantum wells | |
| Zhang, J. -Z.; Zhu, B. -F. | |
| 刊名 | Journal of applied physics
 |
| 2006-07-01 | |
| 卷号 | 100期号:1页码:9 |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.2213174 |
| 通讯作者 | Zhang, j. -z.(phyjz@phy.hw.ac.uk) |
| 英文摘要 | Using the huang-zhu model [k. huang and b.-f. zhu, phys. rev. b 38, 13377 (1988)] for the optical phonons and associated carrier-phonon interactions in semiconductor superlattices, the effects of longitudinal electric field on the energy-loss rates (elrs) of hot carriers as well as on the hot-phonon effect (hpe) in gaas/alas quantum wells (qws) are studied systematically. contributions of various bulklike and interface phonons to the hot-carrier relaxation are compared in detail, and comprehensively analyzed in relation to the intrasubband and intersubband scatterings for quantum cascade lasers. due to the broken parity of the electron (hole) states in the electric field, the bulklike modes with antisymmetric potentials are allowed in the intrasubband relaxation processes, as well as the modes with symmetric potentials. as the interface phonon scattering is strong only in narrow wells, in which the electric field affects the electron (hole) states little, the elrs of hot carriers through the interface phonon scattering are not sensitive to the electric field. the hpe on the hot-carrier relaxation process in the medium and wide wells is reduced by the electric field. the influence of the electric field on the hot-phonon effect in quantum cascade lasers is negligible. when the hpe is ignored, the elrs of hot electrons in wide qws are decreased noticeably by the electric field, but slightly increased by the field when considering the hpe. in contrast with the electrons, the elrs of hot holes in wide wells are increased by the field, irrespective of the hpe. (c) 2006 american institute of physics. |
| WOS关键词 | CASCADE LASERS ; SUPERLATTICES ; RELAXATION ; RATES ; SIMULATION ; TRANSPORT ; DYNAMICS ; CARRIERS ; MODES |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| 出版者 | AMER INST PHYSICS |
| WOS记录号 | WOS:000239056400056 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2426821 |
| 专题 | 半导体研究所 |
| 通讯作者 | Zhang, J. -Z. |
| 作者单位 | 1.Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 2.Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China 3.Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, J. -Z.,Zhu, B. -F.. Influence of longitudinal electric field on the hot-phonon effect in quantum wells[J]. Journal of applied physics,2006,100(1):9. |
| APA | Zhang, J. -Z.,&Zhu, B. -F..(2006).Influence of longitudinal electric field on the hot-phonon effect in quantum wells.Journal of applied physics,100(1),9. |
| MLA | Zhang, J. -Z.,et al."Influence of longitudinal electric field on the hot-phonon effect in quantum wells".Journal of applied physics 100.1(2006):9. |
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