QQ客服 官方微博 反馈留言

	Collective excitations in coupled quantum wells
	Yu, JX; Xia, JB
刊名	Solid state communications
	1996-08-01
卷号	99期号:6页码:433-438
关键词	Semiconductors Quantum wells Dielectric response Electron-electron interactions
ISSN号	0038-1098
通讯作者	Yu, jx()
英文摘要	The dielectric response of a modulated three-dimensional electron system composed of a periodic array of quantum wells with weak coupling and strong coupling are studied, and the dispersions of the collective excitations and the single particle excitations as functions of wave vectors are given. it is found that for the nearly isolated multiple-quantum-well case with several subbands occupation, there is a three-dimensional-like plasmon when q(z)=0 (q(z) is the wave-vector component in the superlattice axis). there also exist intersubband collective excitations in addition to one intra-subband mode when q(z) not equal 0. the intra-subband mode has a linear dispersion relation with q(//) (the wave-vector component perpendicular to the superlattice axis) when q(//) is small. the inter-subband modes cover wider ranges in q(//) with increasing values of q(z). the energies of inter-subband collective excitations are close by the corresponding inter-subband single-particle excitation spectra. the collective excitation dispersions show obvious anisotropy in the 2d quantum limit. the calculated results agree with the experiment. the coupling between quantum wells affects markedly both the collective excitations and the single particle excitations spectra. the system shows gradually a near-three-dimensional electron gas character with increasing coupling. copyright (c) 1996 published by elsevier science ltd
WOS关键词	SUPERLATTICES
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:A1996UW76800012
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2428488
专题	半导体研究所
通讯作者	Yu, JX
作者单位	CHINESE ACAD SCI, INST SEMICOND, BEIJING 100083, PEOPLES R CHINA
推荐引用方式 GB/T 7714	Yu, JX,Xia, JB. Collective excitations in coupled quantum wells[J]. Solid state communications,1996,99(6):433-438.
APA	Yu, JX,&Xia, JB.(1996).Collective excitations in coupled quantum wells.Solid state communications,99(6),433-438.
MLA	Yu, JX,et al."Collective excitations in coupled quantum wells".Solid state communications 99.6(1996):433-438.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。