Revealing multiple charge-density-wave orders in TbTe3 by optical conductivity and ultrafast pump-probe experiments

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	Revealing multiple charge-density-wave orders in TbTe3 by optical conductivity and ultrafast pump-probe experiments
	Chen, RY ; Hu, BF ; Dong, T ; Wang, NL
刊名	PHYSICAL REVIEW B
	2014
卷号	89 期号:7
ISSN号	1098-0121
通讯作者	Chen, RY (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Rare-earth tri-tellurium RTe3 is a typical quasi-two-dimensional system which exhibits obvious charge-density-wave (CDW) orders. So far, RTe3 with heavier R ions (Dy, Ho, Er, and Tm) are believed to experience two CDW phase transitions, while the lighter ones only hold one. TbTe3 is claimed to belong to the latter. However, in this work we present evidences that TbTe3 also possesses more than one CDW order. Aside from the one at 336 K, which was extensively studied and reported to be driven by imperfect Fermi surface nesting with a wave vector q = (2/7c*), a new CDW energy gap (260 meV) develops at around 165 K, revealed by both infrared reflectivity spectroscopy and ultrafast pump-probe spectroscopy. More intriguingly, the origin of this energy gap is different from the second CDW order in the heavier R ions-based compounds RTe3 (R = Dy, Ho, Er, and Tm).
资助信息	National Science Foundation of China [11120101003, 11327806, 11074291]; 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/311004/59561]
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	Chen, RY,Hu, BF,Dong, T,et al. Revealing multiple charge-density-wave orders in TbTe3 by optical conductivity and ultrafast pump-probe experiments[J]. PHYSICAL REVIEW B,2014,89(7).
APA	Chen, RY,Hu, BF,Dong, T,&Wang, NL.(2014).Revealing multiple charge-density-wave orders in TbTe3 by optical conductivity and ultrafast pump-probe experiments.PHYSICAL REVIEW B,89(7).
MLA	Chen, RY,et al."Revealing multiple charge-density-wave orders in TbTe3 by optical conductivity and ultrafast pump-probe experiments".PHYSICAL REVIEW B 89.7(2014).