| Impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inas/gaas quantum dots | |
| Gu Yong-Xian; Yang Tao; Ji Hai-Ming; Xu Peng-Fei; Wang Zhan-Guo | |
| 刊名 | Chinese physics b
 |
| 2010-08-01 | |
| 卷号 | 19期号:8页码:9 |
| 关键词 | Quantum dot Symmetrized hamiltonian Burt-foreman hamiltonian Finite element method Spurious solutions |
| ISSN号 | 1674-1056 |
| 通讯作者 | Yang tao(tyang@semi.ac.cn) |
| 英文摘要 | We present a systematic investigation of calculating quantum dots (qds) energy levels using finite element method in the frame of eight-band k . p method. numerical results including piezoelectricity, electron and hole levels, as yell as wave functions are achieved. in the calculation of energy levels, we do observe spurious solutions (sss) no matter burt-foreman or symmetrized hamiltonians are used. different theories are used to analyse the sss, we find that the ellipticity theory can give a better explanation for the origin of sss and symmetrized hamiltonian is easier to lead to sss. the energy levels simulated with the two hamiltonians are compared to each other after eliminating sss, different hamiltonians cause a larger difference on electron energy levels than that on hole energy levels and this difference decreases with the increase of qd size. |
| WOS关键词 | EFFECTIVE-MASS APPROXIMATION ; P THEORY |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000280741800092 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2427842 |
| 专题 | 半导体研究所 |
| 通讯作者 | Yang Tao |
| 作者单位 | Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu Yong-Xian,Yang Tao,Ji Hai-Ming,et al. Impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inas/gaas quantum dots[J]. Chinese physics b,2010,19(8):9. |
| APA | Gu Yong-Xian,Yang Tao,Ji Hai-Ming,Xu Peng-Fei,&Wang Zhan-Guo.(2010).Impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inas/gaas quantum dots.Chinese physics b,19(8),9. |
| MLA | Gu Yong-Xian,et al."Impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inas/gaas quantum dots".Chinese physics b 19.8(2010):9. |
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