Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact
文献类型：期刊论文
| 作者 | Xiong, Y ; Xie, XC ; Xiong, SJ |
| 刊名 | PHYSICS LETTERS A
 |
| 出版日期 | 2011 |
| 卷号 | 375期号:37页码:3325 |
| 关键词 | ONE-DIMENSIONAL CONSTRICTION QUANTIZED CONDUCTANCE SPIN POLARIZATION ELECTRON-GAS WIRES REGIME |
| ISSN号 | 0375-9601 |
| 通讯作者 | Xiong, Y: Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China. |
| 中文摘要 | 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. |
| 收录类别 | SCI |
| 资助信息 | State Key Program for Basic Research of China [2009CB929504, 2011CB922102]; National Foundation of Natural Science in China [10704040, 61076094, 10874071] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33897]  |
| 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 | Xiong, Y,Xie, XC,Xiong, SJ. Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact[J]. PHYSICS LETTERS A,2011,375(37):3325. |
| APA | Xiong, Y,Xie, XC,&Xiong, SJ.(2011).Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact.PHYSICS LETTERS A,375(37),3325. |
| MLA | Xiong, Y,et al."Anti-resonance and the "0.7 anomaly" in conductance through a quantum point contact".PHYSICS LETTERS A 375.37(2011):3325. |
入库方式： OAI收割
来源：物理研究所
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