Determination of the surface states from the ultrafast electronic states in a thermoelectric material

doi:10.1088/1674-1056/ac373c

	Determination of the surface states from the ultrafast electronic states in a thermoelectric material
	Wu, Tongyao 1; Wang, Hongyuan2 ; Yang, Yuanyuan 1; Duan, Shaofeng 1; Huang, Chaozhi 1; Tang, Tianwei 1; Guo, Yanfeng2 ; Luo, Weidong 3; Zhang, Wentao 1
	2022-02-01
发表期刊	CHINESE PHYSICS B
ISSN	1674-1056
EISSN	2058-3834
卷号	31 期号:2
DOI	10.1088/1674-1056/ac373c
摘要	We reveal the electronic structure in YbCd2Sb2, a thermoelectric material, by angle-resolved photoemission spectroscopy (ARPES) and time-resolved ARPES (trARPES). Specifically, three bulk bands at the vicinity of the Fermi level are evidenced near the Brillouin zone center, consistent with the density functional theory (DFT) calculation. It is interesting that the spin-unpolarized bulk bands respond unexpectedly to right- and left-handed circularly polarized probe. In addition, a hole band of surface states, which is not sensitive to the polarization of the probe beam and is not expected from the DFT calculation, is identified. We find that the non-equilibrium quasiparticle recovery rate is much smaller in the surface states than that of the bulk states. Our results demonstrate that the surface states can be distinguished from the bulk ones from a view of time scale in the nonequilibrium physics. © 2022 Chinese Physical Society and IOP Publishing Ltd.
关键词	Antimony compounds Electronic structure Photoelectron spectroscopy Probes Surface states Thermoelectric equipment Angle resolved photoemission spectroscopy Density-functional theory calculations Electronic band structure Electronic.structure Thermo-Electric materials Thermoelectric material Time- and angle-resolved photoemission spectroscopy Time-resolved Time-resolved photoemissions Ultra-fast
URL	查看原文
收录类别	EI
语种	英语
出版者	Institute of Physics
EI入藏号	20232614323603
EI主题词	Density functional theory
EI分类号	615.4 Thermoelectric Energy ; 922.1 Probability Theory ; 931 Classical Physics ; Quantum Theory ; Relativity ; 931.3 Atomic and Molecular Physics ; 931.4 Quantum Theory ; Quantum Mechanics ; 932 High Energy Physics ; Nuclear Physics ; Plasma Physics
原始文献类型	Journal article (JA)
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/316852
专题	物质科学与技术学院物质科学与技术学院_PI研究组_郭艳峰组物质科学与技术学院_博士生
作者单位	1.Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai; 200240, China; 2.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 3.Institute of Natural Sciences, Shanghai Jiao Tong University, Shanghai; 200240, China
推荐引用方式 GB/T 7714	Wu, Tongyao,Wang, Hongyuan,Yang, Yuanyuan,et al. Determination of the surface states from the ultrafast electronic states in a thermoelectric material[J]. CHINESE PHYSICS B,2022,31(2).
APA	Wu, Tongyao.,Wang, Hongyuan.,Yang, Yuanyuan.,Duan, Shaofeng.,Huang, Chaozhi.,...&Zhang, Wentao.(2022).Determination of the surface states from the ultrafast electronic states in a thermoelectric material.CHINESE PHYSICS B,31(2).
MLA	Wu, Tongyao,et al."Determination of the surface states from the ultrafast electronic states in a thermoelectric material".CHINESE PHYSICS B 31.2(2022).