Kondo effect in double quantum dots with ferromagnetic rkky interaction
文献类型：期刊论文
| 作者 | Pan,Lei1,2; Wang,YuanDong1; Li,ZhenHua1,3; Wei,JianHua1; Yan,YiJing4,5 |
| 刊名 | Journal of physics: condensed matter
 |
| 出版日期 | 2016-11-14 |
| 卷号 | 29期号:2 |
| ISSN号 | 0953-8984 |
| 关键词 | Double quantum dots Kondo effect Rkky interaction |
| DOI | 10.1088/0953-8984/29/2/025601 |
| 英文摘要 | Abstract we study kondo effect in parallel-coupled double quantum dots with ferromagnetic ruderman–kittel–kasuya–yoshida (rkky) interaction, by using the exact and nonperturbative hierarchical equations of motion approach. we construct the phase diagram in the parameter plane of the inter-dot coupling t and the ferromagnetic exchange interaction j (j?????4t2/u plane). three different ground states, the kondo singlet, spin singlet and s??=??1 kondo, are determined in the diagram. we find the ferromagnetic coupling will raise the kondo peak in the area of finite hopping t which is called ‘j-enhanced kondo effect’. another enhancement of the kondo effect by t (‘t-enhanced kondo effect’) at j??=??0 is also presented. by checking the electron–electron interaction self-energy and magnetic susceptibility, we verify the ground state at large j is an under-screening kondo state composed of a fermi liquid with a residual spin 1/2, which is consistent with the ‘singular fermi liquid state’ in the literature. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:0953-8984-29-2-025601 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373536 |
| 专题 | 物理研究所 |
| 作者单位 | 1.Department of Physics, Renmin University of China, Beijing 100872, People’s Republic of China 2.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China 3.Beijing Computational Science Research Center, Beijing 100193, People’s Republic of China 4.Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 5.Department of Chemistry, Hong Kong University of Science and Technology, Hong Kong, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Pan,Lei,Wang,YuanDong,Li,ZhenHua,et al. Kondo effect in double quantum dots with ferromagnetic rkky interaction[J]. Journal of physics: condensed matter,2016,29(2). |
| APA | Pan,Lei,Wang,YuanDong,Li,ZhenHua,Wei,JianHua,&Yan,YiJing.(2016).Kondo effect in double quantum dots with ferromagnetic rkky interaction.Journal of physics: condensed matter,29(2). |
| MLA | Pan,Lei,et al."Kondo effect in double quantum dots with ferromagnetic rkky interaction".Journal of physics: condensed matter 29.2(2016). |
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来源：物理研究所
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