Coqblin-Schrieffer impurity in a singular metal
文献类型：期刊论文
| 作者 | Wang, YP ; Schlottmann, P |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2000 |
| 卷号 | 62期号:11页码:6877 |
| 关键词 | GAPLESS FERMI SYSTEMS CONFORMAL-FIELD-THEORY KONDO PROBLEM MAGNETIC-IMPURITIES LUTTINGER LIQUID RENORMALIZATION-GROUP FINITE TEMPERATURE HEISENBERG-MODEL BEHAVIOR ANDERSON |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, YP: Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. |
| 中文摘要 | A Coqblin-Schrieffer impurity of spin S coupled to the boundary of an open SU(N)-invariant t-J chain with N= 2S+ 2 is studied. The model is integrable as a function of one coupling parameter v for arbitrary spin and band filling. The system is coupled to a reservoir of electrons and as a function of the chemical potential the host chain has a critical point corresponding to the van I-love singularity of the empty band of charges. In the neighborhood of this critical point we study the low-temperature properties of the impurity as a function of v. For constant chemical potential we obtain two critical coupling values v(1)= - 1/2 and v(2)=0, Separating phases in which the impurity spin is completely compensated (Kondo effect), partially screened (undercompensated impurity), or decoupled from the chain (free spin). The partial compensation occurs as a consequence of a thermally activated Kondo effect in the region v(1) < v < v(2). The possible realization of such a finite temperature Kondo effect in narrow-gap semiconductors is discussed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35190]  |
| 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 | Wang, YP,Schlottmann, P. Coqblin-Schrieffer impurity in a singular metal[J]. PHYSICAL REVIEW B,2000,62(11):6877. |
| APA | Wang, YP,&Schlottmann, P.(2000).Coqblin-Schrieffer impurity in a singular metal.PHYSICAL REVIEW B,62(11),6877. |
| MLA | Wang, YP,et al."Coqblin-Schrieffer impurity in a singular metal".PHYSICAL REVIEW B 62.11(2000):6877. |
入库方式： OAI收割
来源：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。