Thermoelectric effect in a serial two-quantum-dot

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	Thermoelectric effect in a serial two-quantum-dot
	Zheng J
刊名	physics letters a
	2011
卷号	375 期号:10 页码:1352-1356
关键词	Thermoelectric effect Quantum dot Figure of merit QUANTUM-DOT ELECTRON-TRANSPORT OSCILLATIONS THERMOPOWER PERFORMANCE DEVICES MERIT
ISSN号	0375-9601
通讯作者	chi, f, bohai univ, coll engn, jinzhou 121013, peoples r china. chifeng@semi.ac.cn
学科主题	半导体物理
收录类别	SCI
资助信息	nfs-china [10704011]; lnet [2009r01]; sklsm [chjg200901]
语种	英语
公开日期	2011-07-05 ; 2011-07-15
附注	we study the thermoelectric effect in a serial-coupled two quantum dots (qds) device in the coulomb blockade regime. the electrical conductance, the thermal conductance, the thermopower, and the thermoelectrical figure of merit are calculated by using the green's function method. it is found that the energy levels of the two dots are split into a series of molecular states, where the electrical and the thermal conductances show resonance peaks. these peaks in the electrical conductance are eliminated by the increase of the temperature, while those in the thermal conductance are enhanced because of the bipolar effect. in quite high temperature regime, the figure of merit has two huge peaks with maximums exceeding 20 in the vicinity of the electron-hole symmetry point. the magnitude of the figure of merit will be suppressed for unequal dots' levels, but is enhanced by the asymmetry of the dot-lead coupling strengths. (c) 2011 elsevier b.v. all rights reserved.
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/20895]
专题	半导体研究所_半导体超晶格国家重点实验室
推荐引用方式 GB/T 7714	Zheng J. Thermoelectric effect in a serial two-quantum-dot[J]. physics letters a,2011,375(10):1352-1356.
APA	Zheng J.(2011).Thermoelectric effect in a serial two-quantum-dot.physics letters a,375(10),1352-1356.
MLA	Zheng J."Thermoelectric effect in a serial two-quantum-dot".physics letters a 375.10(2011):1352-1356.