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  4. 中科院固体物理研究所
Origin of the structural phase transition in single-crystal TaTe2

文献类型：期刊论文

作者Gao, J. J.1,4; Si, J. G.1,4; Luo, X.1; Yan, J.1,4; Chen, F. C.1,4; Lin, G. T.1,4; Hu, L.1; Zhang, R. R.3; Tong, P.1; Song, W. H.1
刊名PHYSICAL REVIEW B
出版日期2018-12-10
卷号98期号:22页码:7
ISSN号2469-9950
DOI10.1103/PhysRevB.98.224104
通讯作者Luo, X.(xluo@issp.ac.cn) ; Lu, W. J.(wjlu@issp.ac.cn) ; Sun, Y. P.(ypsun@issp.ac.cn)
英文摘要The origin of the structural phase transition of TaTe2 has been investigated through the measurements of the temperature-dependent Raman spectroscopy and first-principles calculations. Based on the experimental and the calculation results, some interpretations are present. Firstly, abnormal redshifts of few Raman peaks are observed around the structural distortion temperature T-S similar to 170 K, which is thought to originate from the clustering of Ta atoms below T-S . Secondly, new modes of Raman spectrum below T-s are present, which is suggested to be related to the possible transition of charge density wave (CDW) in TaTe2 from the room temperature to the low temperature. The ground state of the TaTe2 is the special charge modulation, which is related to the formation of Ta-Ta dimer structure at low temperature. All explanations have been supported by first-principles calculations. Our results suggest that TaTe2 is an alternative platform to explore the charge-lattice coupling with rich structural and charge configurations in MX2 systems, where M is the transition metal ion (Nb, Ta, Mo, etc.) and X is the chalcogenide one (S, Se, or Te).
WOS关键词CHARGE-DENSITY WAVES ; PLANE-WAVE ; RAMAN ; TEMPERATURE ; SCATTERING ; STATES ; COHP
资助项目National Key Research and Development Program[2016YFA0300404] ; National Key Research and Development Program[2017YFA0403600] ; National Natural Science Foundation of China[11674326] ; National Natural Science Foundation of China[11774351] ; National Natural Science Foundation of China[11704001] ; National Natural Science Foundation of China[11874357] ; National Natural Science Foundation of China[U1832141] ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS[2018HSC-UE011] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-SLH015]
WOS研究方向Materials Science ; Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000452687700009
资助机构National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/40809]  
专题合肥物质科学研究院_中科院固体物理研究所
合肥物质科学研究院_中科院强磁场科学中心
通讯作者Luo, X.; Lu, W. J.; Sun, Y. P.
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
2.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Gao, J. J.,Si, J. G.,Luo, X.,et al. Origin of the structural phase transition in single-crystal TaTe2[J]. PHYSICAL REVIEW B,2018,98(22):7.
APA Gao, J. J..,Si, J. G..,Luo, X..,Yan, J..,Chen, F. C..,...&Sun, Y. P..(2018).Origin of the structural phase transition in single-crystal TaTe2.PHYSICAL REVIEW B,98(22),7.
MLA Gao, J. J.,et al."Origin of the structural phase transition in single-crystal TaTe2".PHYSICAL REVIEW B 98.22(2018):7.

入库方式： OAI收割

来源：合肥物质科学研究院

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