Hall-coefficient diagnostics of the surface state in pressurized SmB6
文献类型：期刊论文
| 作者 | Zhou, YZ; Rosa, PFS; Guo, J; Cai, S; Yu, R; Jiang, S; Yang, K; Li, AG; Si, QM; Wu, Q |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2020 |
| 卷号 | 101期号:12页码:- |
| 关键词 | SUPERCONDUCTIVITY IRON TEMPERATURE TRANSITION VALENCE KELVIN GAP |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.101.125116 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In this study, we report results of the high-pressure Hall coefficient (R-H) measurements in the putative topological Kondo insulator SmB6 up to 37 GPa. Below 10 GPa, our data reveal that R-H(T ) exhibits a prominent peak upon cooling below 20 K. Remarkably, the temperature at which surface conduction dominates coincides with the temperature of the peak in R-H(T). The temperature dependent resistance and Hall coefficient can be well fitted by a two-channel model with contributions from the metallic surface and the thermally activated bulk states. When the bulk of SmB6 becomes metallic and magnetic at similar to 10 GPa, both the R-H(T) peak and the resistance plateau disappear simultaneously. Our results indicate that the R-H(T) peak is a fingerprint to diagnose the presence of a metallic surface state in SmB6. The high-pressure magnetic state of SmB6 is robust to 180 GPa, and no evidence of superconductivity is observed in the metallic phase. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32899]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Dept Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 3.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA 4.Los Alamos Natl Lab, Los Alamos, NM 87545 USA 5.Rennin Univ China, Dept Phys, Beijing 100872, Peoples R China 6.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 7.Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA 8.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, YZ,Rosa, PFS,Guo, J,et al. Hall-coefficient diagnostics of the surface state in pressurized SmB6[J]. PHYSICAL REVIEW B,2020,101(12):-. |
| APA | Zhou, YZ.,Rosa, PFS.,Guo, J.,Cai, S.,Yu, R.,...&Sun, LL.(2020).Hall-coefficient diagnostics of the surface state in pressurized SmB6.PHYSICAL REVIEW B,101(12),-. |
| MLA | Zhou, YZ,et al."Hall-coefficient diagnostics of the surface state in pressurized SmB6".PHYSICAL REVIEW B 101.12(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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