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	Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact
	Xiong, Ye1; Xie, X. C.2,3,4; Xiong, Shi-Jie5
刊名	Physics letters a
	2011-08-29
卷号	375期号:37页码:3325-3328
关键词	Quantum point contact "0.7 anomaly" Anti-resonant transmission
ISSN号	0375-9601
DOI	10.1016/j.physleta.2011.07.015
通讯作者	Xiong, ye(xiongye@njnu.edu.cn)
英文摘要	We investigate the transmission of electrons through a quantum point contact by using a quasi-one-dimensional model with an extra local bound state staying below the band bottom. while the complete transmission in lower channels gives rise to plateaus of conductance at multiples of 2e(2)/h, the electrons in the lowest channel are scattered by the local bound state when it is singly occupied. this scattering produces a wide anti-resonant zero-transmittance for singlet formed by tunneling and local electrons, and has no effect on triplets, leading to an exact 0.75(2e(2)/h) shoulder prior to the first 2e(2)/h plateau. while at low temperature, the formation of kondo cloud screens magnetic moment of the local bound state and reduces the scattering to the singlet channel, complementing the shoulder from 0.75 to 1. crown copyright (c) 2011 published by elsevier b.v. all rights reserved.
WOS关键词	ONE-DIMENSIONAL CONSTRICTION ; QUANTIZED CONDUCTANCE ; SPIN POLARIZATION ; ELECTRON-GAS ; WIRES ; REGIME
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000294573400018
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373752
专题	物理研究所
通讯作者	Xiong, Ye
作者单位	1.Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China 2.Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA 3.Chinese Acad Sci, Int Ctr Quantum Struct, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China 5.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Ye,Xie, X. C.,Xiong, Shi-Jie. Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact[J]. Physics letters a,2011,375(37):3325-3328.
APA	Xiong, Ye,Xie, X. C.,&Xiong, Shi-Jie.(2011).Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact.Physics letters a,375(37),3325-3328.
MLA	Xiong, Ye,et al."Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact".Physics letters a 375.37(2011):3325-3328.

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