Orbital Kondo effect in a parallel double quantum dot

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Orbital Kondo effect in a parallel double quantum dot
	Bao, ZQ ; Guo, AM ; Sun, QF
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2014
卷号	26 期号:43
关键词	orbital Kondo effect parallel double quantum dot pseudospin transport
ISSN号	0953-8984
通讯作者	Bao, ZQ (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We construct a theoretical model to study the orbital Kondo effect in a parallel double quantum dot (DQD). Recently, pseudospin-resolved transport spectroscopy of the orbital Kondo effect in a DQD has been experimentally reported. The experiment revealed that when interdot tunneling is ignored, two and one Kondo peaks exist in the conductance-bias curve for pseudospin-non-resolved and pseudospin-resolved cases, respectively. Our theoretical studies reproduce this experimental result. We also investigate the case of all lead voltages being non-equal (the complete pseudospin-resolved case) and found that there are at most four Kondo peaks in the curve of the conductance versus the pseudospin splitting energy. When interdot tunneling is introduced, some new Kondo peaks and dips can emerge. Furthermore, the pseudospin transport and the pseudospin flipping current are also studied in the DQD system. Since the pseudospin transport is much easier to control and measure than the real spin transport, it can be used to study the physical phenomenon related to the spin transport.
资助信息	NBRP of China [2012CB921303]; NSF-China [11274364]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59265]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Bao, ZQ,Guo, AM,Sun, QF. Orbital Kondo effect in a parallel double quantum dot[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2014,26(43).
APA	Bao, ZQ,Guo, AM,&Sun, QF.(2014).Orbital Kondo effect in a parallel double quantum dot.JOURNAL OF PHYSICS-CONDENSED MATTER,26(43).
MLA	Bao, ZQ,et al."Orbital Kondo effect in a parallel double quantum dot".JOURNAL OF PHYSICS-CONDENSED MATTER 26.43(2014).