Exotic Kondo crossover in a wide temperature region in the topological Kondo insulator SmB6 revealed by high-resolution ARPES
文献类型：期刊论文
| 作者 | Xu, N ; Matt, CE ; Pomjakushina, E ; Shi, X ; Dhaka, RS ; Plumb, NC ; Radovic, M ; Biswas, PK ; Evtushinsky, D ; Zabolotnyy, V ; Dil, JH ; Conder, K ; Mesot, J ; Ding, H ; Shi, M |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:8 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Xu, N (reprint author), Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland. |
| 中文摘要 | Temperature dependence of the electronic structure of SmB6 is studied by high-resolution angle-resolved photoemission spectroscopy (ARPES) down to 1 K. We demonstrate that there is no essential difference for the dispersions of the surface states below and above the resistivity saturating anomaly (similar to 3.5 K). Quantitative analyses of the surface states indicate that the quasiparticle scattering rate increases linearly as a function of temperature and binding energy, which differs from Fermi-liquid behavior. Most intriguingly, we observe that the hybridization between the d and f states builds gradually over a wide temperature region (30 K < T < 110 K). The surface states appear when the hybridization starts to develop. Our detailed temperature-dependence results give a complete interpretation of the exotic resistivity result of SmB6, as well as the discrepancies among experimental results concerning the temperature regions in which the topological surface states emerge and the Kondo gap opens, and give insights into the exotic Kondo crossover and its relationship with the topological surface states in the topological Kondo insulator SmB6. |
| 资助信息 | Sino-Swiss Science and Technology Cooperation [IZLCZ2138954]; Swiss National Science Foundation [200021-137783]; MOST [2010CB923000]; NSFC |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59513]  |
| 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 | Xu, N,Matt, CE,Pomjakushina, E,et al. Exotic Kondo crossover in a wide temperature region in the topological Kondo insulator SmB6 revealed by high-resolution ARPES[J]. PHYSICAL REVIEW B,2014,90(8). |
| APA | Xu, N.,Matt, CE.,Pomjakushina, E.,Shi, X.,Dhaka, RS.,...&Shi, M.(2014).Exotic Kondo crossover in a wide temperature region in the topological Kondo insulator SmB6 revealed by high-resolution ARPES.PHYSICAL REVIEW B,90(8). |
| MLA | Xu, N,et al."Exotic Kondo crossover in a wide temperature region in the topological Kondo insulator SmB6 revealed by high-resolution ARPES".PHYSICAL REVIEW B 90.8(2014). |
入库方式： OAI收割
来源：物理研究所
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