Unconventional charge-density wave in Sr3Ir4Sn13 cubic superconductor revealed by optical spectroscopy study

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	Unconventional charge-density wave in Sr3Ir4Sn13 cubic superconductor revealed by optical spectroscopy study
	Fang, AF ; Wang, XB ; Zheng, P ; Wang, NL
刊名	PHYSICAL REVIEW B
	2014
卷号	90 期号:3
ISSN号	1098-0121
通讯作者	Fang, AF (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Sr3Ir4Sn13 is an interesting compound showing the coexistence of structural phase transition and superconductivity. The structural phase transition at 147 K leads to the formation of a superlattice. We perform optical spectroscopy measurements across the structural phase transition on single-crystal samples of Sr3Ir4Sn13. The optical spectroscopy study reveals an unusual temperature-induced spectral weight transfer over a broad energy scale, yielding evidence for the presence of electron correlation effects. Below the structural phase transition temperature an energy gap-like suppression in optical conductivity was observed, leading to the removal of partial itinerant carriers near the Fermi level. Unexpectedly, the suppression appears at a much higher energy scale than expected for the usual charge-density-wave phase transition.
资助信息	National Science Foundation of China [11120101003, 11327806]; Ministry of Science and Technology of China [2011CB921701, 2012CB821403]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59527]
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	Fang, AF,Wang, XB,Zheng, P,et al. Unconventional charge-density wave in Sr3Ir4Sn13 cubic superconductor revealed by optical spectroscopy study[J]. PHYSICAL REVIEW B,2014,90(3).
APA	Fang, AF,Wang, XB,Zheng, P,&Wang, NL.(2014).Unconventional charge-density wave in Sr3Ir4Sn13 cubic superconductor revealed by optical spectroscopy study.PHYSICAL REVIEW B,90(3).
MLA	Fang, AF,et al."Unconventional charge-density wave in Sr3Ir4Sn13 cubic superconductor revealed by optical spectroscopy study".PHYSICAL REVIEW B 90.3(2014).