Finite-size effect and Kondo screening effect in an A-B ring with a quantum dot
文献类型：期刊论文
| 作者 | Wu, SQ; Wang, SJ; Sun, WL; Yu, WL |
| 刊名 | CHINESE PHYSICS
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 13页码:510-515 |
| ISSN号 | 1009-1963 |
| 关键词 | finite-size effect Kondo screening effect A-B ring quantum dot |
| 英文摘要 | The properties of the ground state of a closed dot-ring system with a magnetic flux in the Kondo regime are studied theoretically by means of a one-impurity Anderson Hamiltonian. The Hamiltonian is solved by means of the slave-boson mean-field theory. It is shown that at T=O, a suppressed Kondo effect exists in this system even when the mean level spacing of electrons in the ring is larger than the bulk Kondo temperature. The physical quantities depend sensitively on both the parity of the system and the size of the ring; the rich physical behaviour can be attributed to the coexistence of both the finite-size effect and the Kondo screening effect. It is also possible to detect the Kondo screening cloud by measuring the persistent current or the zero field impurity susceptibility chi(imp) directly in future experiments. |
| WOS关键词 | SINGLE-ELECTRON TRANSISTOR ; AHARONOV-BOHM RING ; PERSISTENT CURRENT ; FANO RESONANCES ; TRANSPORT ; IMPURITY ; SYSTEMS ; VALENCE ; CIRCUIT ; CHARGE |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000220682200017 |
| 源URL | [http://119.78.100.186/handle/113462/24675]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wu, SQ |
| 作者单位 | 1.Sichuan Normal Univ, Dept Phys, Chengdu 610068, Peoples R China 2.SW Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China 3.Chengdu Inst Informat & Technol, Chengdu 610030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, SQ,Wang, SJ,Sun, WL,et al. Finite-size effect and Kondo screening effect in an A-B ring with a quantum dot[J]. CHINESE PHYSICS,2004,13:510-515. |
| APA | Wu, SQ,Wang, SJ,Sun, WL,&Yu, WL.(2004).Finite-size effect and Kondo screening effect in an A-B ring with a quantum dot.CHINESE PHYSICS,13,510-515. |
| MLA | Wu, SQ,et al."Finite-size effect and Kondo screening effect in an A-B ring with a quantum dot".CHINESE PHYSICS 13(2004):510-515. |
入库方式： OAI收割
来源：近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。