Hall-coefficient diagnostics of the surface state in pressurized SmB6

doi:10.1103/PhysRevB.101.125116

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	Hall-coefficient diagnostics of the surface state in pressurized SmB6
	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
	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
内容类型	期刊论文
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):-.