Structural phase transition in IrTe2: A combined study of optical spectroscopy and band structure calculations

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	Structural phase transition in IrTe2: A combined study of optical spectroscopy and band structure calculations
	Fang, AF ; Xu, G ; Dong, T ; Zheng, P ; Wang, NL
刊名	SCIENTIFIC REPORTS
	2013
卷号	3
ISSN号	2045-2322
通讯作者	Wang, NL (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Ir1-xPtxTe2 is an interesting system showing competing phenomenon between structural instability and superconductivity. Due to the large atomic numbers of Ir and Te, the spin-orbital coupling is expected to be strong in the system which may lead to nonconventional superconductivity. We grew single crystal samples of this system and investigated their electronic properties. In particular, we performed optical spectroscopic measurements, in combination with density function calculations, on the undoped compound IrTe2 in an effort to elucidate the origin of the structural phase transition at 280 K. The measurement revealed a dramatic reconstruction of band structure and a significant reduction of conducting carriers below the phase transition. We elaborate that the transition is not driven by the density wave type instability but caused by the crystal field effect which further splits/separates the energy levels of Te (p(x), p(y)) and Te p(z) bands.
资助信息	National Science Foundation of China; 973 project of the Ministry of Science and Technology of China [2011CB921701, 2012CB821403]
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57487]
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,Xu, G,Dong, T,et al. Structural phase transition in IrTe2: A combined study of optical spectroscopy and band structure calculations[J]. SCIENTIFIC REPORTS,2013,3.
APA	Fang, AF,Xu, G,Dong, T,Zheng, P,&Wang, NL.(2013).Structural phase transition in IrTe2: A combined study of optical spectroscopy and band structure calculations.SCIENTIFIC REPORTS,3.
MLA	Fang, AF,et al."Structural phase transition in IrTe2: A combined study of optical spectroscopy and band structure calculations".SCIENTIFIC REPORTS 3(2013).