Photoemission study of the electronic structure of valence band convergent SnSe

doi:10.1103/PhysRevB.96.165118

	Photoemission study of the electronic structure of valence band convergent SnSe
	Wang, C. W.; Xia, Y. Y. Y.; Tian, Z.; Jiang, J.; Li, B. H.; Cui, S. T.; Yang, H. F.; Liang, A. J.; Zhan, X. Y.; Hong, G. H.
刊名	PHYSICAL REVIEW B
	2017
卷号	96 期号:16
ISSN号	2469-9950
DOI	10.1103/PhysRevB.96.165118
英文摘要	IV-VI semiconductor SnSe has been known as the material with record high thermoelectric performance. The multiple close-to-degenerate (or "convergent") valence bands in the electronic band structure has been one of the key factors contributing to the high power factor and thus figure of merit in the SnSe single crystal. To date, there have been primarily theoretical calculations of this particular electronic band structure. In this paper, however, using angle-resolved photoemission spectroscopy, we perform a systematic investigation of the electronic structure of SnSe. We directly observe three predicted hole bands with small energy differences between their band tops and relatively small in-plane effective masses, in good agreement with the ab initio calculations and critical for the enhancement of the Seebeck coefficient while keeping high electrical conductivity. Our results reveal the complete band structure of SnSe and help to provide a deeper understanding of the electronic origin of the excellent thermoelectric performances in SnSe.
WOS记录号	WOS:000412700200002
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26639]
专题	中国科学院上海硅酸盐研究所
作者单位	1.[Wang, C. W. 2.Zhan, X. Y. 3.Liu, Z.] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Ctr Excellence Superconducting Elect, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 4.[Wang, C. W. 5.Xia, Y. Y. Y. 6.Tian, Z. 7.Jiang, J. 8.Li, B. H. 9.Cui, S. T. 10.Yang, H. F.
推荐引用方式 GB/T 7714	Wang, C. W.,Xia, Y. Y. Y.,Tian, Z.,et al. Photoemission study of the electronic structure of valence band convergent SnSe[J]. PHYSICAL REVIEW B,2017,96(16).
APA	Wang, C. W..,Xia, Y. Y. Y..,Tian, Z..,Jiang, J..,Li, B. H..,...&Chen, Y. L..(2017).Photoemission study of the electronic structure of valence band convergent SnSe.PHYSICAL REVIEW B,96(16).
MLA	Wang, C. W.,et al."Photoemission study of the electronic structure of valence band convergent SnSe".PHYSICAL REVIEW B 96.16(2017).