Bipolar Thermoelectric Effect in a Serially Coupled Quantum Dot System

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52038

Title:	Bipolar Thermoelectric Effect in a Serially Coupled Quantum Dot System
Authors:	Kuo,DMT;Chang,YC
Contributors:	電機工程學系
Keywords:	DEVICES;MERIT
Date:	2011
Issue Date:	2012-03-28 10:13:54 (UTC+8)
Publisher:	國立中央大學
Abstract:	The Seebeck coefficient (S) of a serially coupled quantum dot (SCQD) junction system is theoretically studied via a two-level Anderson model. A change of sign in S with respect to temperature is found, which arises from the competition between tunneling currents due to electrons and holes (i.e., bipolar tunneling effect). The change of sign in S implies that one can vary the equilibrium temperature to produce thermoelectric current in either the forward or reverse direction, leading to a bipolar thermoelectric effect. For the case of two parallel SCQDs, we also observe the oscillatory behavior of S with respect to temperature. (C) 2011 The Japan Society of Applied Physics
Relation:	JAPANESE JOURNAL OF APPLIED PHYSICS
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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