Impact of symmetrized and Burt-Foreman Hamiltonians on spurious solutions and energy levels of InAs/GaAs quantum dots

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	Impact of symmetrized and Burt-Foreman Hamiltonians on spurious solutions and energy levels of InAs/GaAs quantum dots
	Gu YX (Gu Yong-Xian) ; Yang T (Yang Tao) ; Ji HM (Ji Hai-Ming) ; Xu PF (Xu Peng-Fei) ; Wang ZG (Wang Zhan-Guo)
刊名	chinese physics b
	2010
卷号	19 期号:8 页码:art. no. 088102
关键词	quantum dot symmetrized Hamiltonian Burt-Foreman Hamiltonian finite element method spurious solutions EFFECTIVE-MASS APPROXIMATION P THEORY
合作状况	其它
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.; submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-09-07t12:19:32z no. of bitstreams: 1 impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inasgaas quantum dots.pdf: 338964 bytes, checksum: d93734ed7914009eb5ad50b0204739ba (md5); approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-09-07t13:09:05z (gmt) no. of bitstreams: 1 impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inasgaas quantum dots.pdf: 338964 bytes, checksum: d93734ed7914009eb5ad50b0204739ba (md5); made available in dspace on 2010-09-07t13:09:05z (gmt). no. of bitstreams: 1 impact of symmetrized and burt-foreman hamiltonians on spurious solutions and energy levels of inasgaas quantum dots.pdf: 338964 bytes, checksum: d93734ed7914009eb5ad50b0204739ba (md5) previous issue date: 2010; 其它
学科主题	半导体材料
收录类别	SCI
语种	英语
公开日期	2010-09-07
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/13509]
专题	半导体研究所_中科院半导体材料科学重点实验室
推荐引用方式 GB/T 7714	Gu YX ,Yang T ,Ji HM ,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):art. no. 088102.
APA	Gu YX ,Yang T ,Ji HM ,Xu PF ,&Wang ZG .(2010).Impact of symmetrized and Burt-Foreman Hamiltonians on spurious solutions and energy levels of InAs/GaAs quantum dots.chinese physics b,19(8),art. no. 088102.
MLA	Gu YX ,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):art. no. 088102.