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Origin and strain tuning of charge density wave in LaTe3

文献类型：期刊论文

作者Hong, Yuanting2,3; Wei, Qin1; Liang, Xin2,3; Lu, Wenjian3
刊名PHYSICA B-CONDENSED MATTER
出版日期2022-08-15
卷号639
关键词Rare-earth tritelluride Charge density wave Electron-phonon coupling
ISSN号0921-4526
DOI10.1016/j.physb.2022.413988
通讯作者Wei, Qin(weiqin@sdutcm.edu.cn) ; Lu, Wenjian(wjlu@issp.ac.cn)
英文摘要We study the origin of charge density wave (CDW) in rare-earth tritelluride LaTe3 and the strain tuning effect on CDW in monolayer LaTe3 by first-principles calculations. The calculations of the electronic structure, phonon spectrum, electron susceptibility, and electron-phonon coupling (EPC) matrix show that the origin of CDW in LaTe3 is momentum-dependent EPC rather than Fermi-surface nesting. The unidirectional CDW with a wavevector QCDW 2/7c* is the most stable state. We study the biaxial strain effect on CDW in monolayer LaTe3 by evaluating the total energy, CDW-related lattice distortions, and phonon spectra. Our results show that the tensile strain can enhance CDW order, while the compressive strain can inhibit CDW order. As the CDW order is fully suppressed, superconductivity could be induced. Our study may help to clarify the mechanism of CDW in LaTe3 and find the effective tuning method of CDW in monolayer or few-layer configuration.
WOS关键词TRANSITION ; TEMPERATURE ; FILMS
资助项目Open Project of State Key Laboratory of Superhard Materials, Jilin University[201902]
WOS研究方向Physics
语种英语
WOS记录号WOS:000800458300004
出版者ELSEVIER
资助机构Open Project of State Key Laboratory of Superhard Materials, Jilin University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/131083]  
专题中国科学院合肥物质科学研究院
通讯作者Wei, Qin; Lu, Wenjian
作者单位1.Shandong Univ Tradit Chinese Med, Jinan 250355, Peoples R China
2.Univ Sci & Technol China, Sci Isl Branch Grad Sch, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Hong, Yuanting,Wei, Qin,Liang, Xin,et al. Origin and strain tuning of charge density wave in LaTe3[J]. PHYSICA B-CONDENSED MATTER,2022,639.
APA Hong, Yuanting,Wei, Qin,Liang, Xin,&Lu, Wenjian.(2022).Origin and strain tuning of charge density wave in LaTe3.PHYSICA B-CONDENSED MATTER,639.
MLA Hong, Yuanting,et al."Origin and strain tuning of charge density wave in LaTe3".PHYSICA B-CONDENSED MATTER 639(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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