The Stark effect on excitons in a bilayer system

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	The Stark effect on excitons in a bilayer system
	Wang L (Wang Li) ; Li SS (Li Shu-Shen)
刊名	journal of applied physics
	2006
卷号	100 期号:1 页码:art.no.013512
关键词	BOSE-EINSTEIN CONDENSATION QUANTUM-WELLS DOTS
ISSN号	0021-8979
通讯作者	wang, l, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china. e-mail: wangli@mail.semi.ac.cn
中文摘要	the stark effect on excitons in a bilayer system is investigated theoretically within the framework of the effective-mass approximation. the calculations indicate that the energy of the excitons decreases as the value of the in-plane electric field f increases at a fixed value of the distance d between the layers. however, the energy of the excitons increases with d at a fixed value of f. in particular, it increases linearly at small values of d but increases as 1/d at large values. therefore, it can be concluded that excitons in a bilayer system have a small binding energy equal to the absolute value of the excitonic energy at large d or small f. in addition, the radiative lifetime of heavy-hole excitons in this system is calculated and is found to be short at small values of both f and d. the radiative lifetime of heavy-hole excitons in a bilayer system can be increased by two orders by an in-plane electric field of 2 kv/cm when d is twice the excitonic rydberg. (c) 2006 american institute of physics.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-04-11
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/10500]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Wang L ,Li SS . The Stark effect on excitons in a bilayer system[J]. journal of applied physics,2006,100(1):art.no.013512.
APA	Wang L ,&Li SS .(2006).The Stark effect on excitons in a bilayer system.journal of applied physics,100(1),art.no.013512.
MLA	Wang L ,et al."The Stark effect on excitons in a bilayer system".journal of applied physics 100.1(2006):art.no.013512.