Origin and strain tuning of charge density wave in LaTe3

doi:10.1016/j.physb.2022.413988

HFCAS OpenIR

	Origin and strain tuning of charge density wave in LaTe3
	Hong, Yuanting 1,2; Wei, Qin 3; Liang, Xin 1,2; Lu, Wenjian1
	2022-08-15
发表期刊	PHYSICA B-CONDENSED MATTER
ISSN	0921-4526
通讯作者	Wei, Qin(weiqin@sdutcm.edu.cn) ; Lu, Wenjian(wjlu@issp.ac.cn)
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.
关键词	Rare-earth tritelluride Charge density wave Electron-phonon coupling
DOI	10.1016/j.physb.2022.413988
关键词[WOS]	TRANSITION ; TEMPERATURE ; FILMS
收录类别	SCI
语种	英语
资助项目	Open Project of State Key Laboratory of Superhard Materials, Jilin University[201902]
项目资助者	Open Project of State Key Laboratory of Superhard Materials, Jilin University
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
WOS记录号	WOS:000800458300004
出版者	ELSEVIER
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/131084
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.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Sci Isl Branch Grad Sch, Hefei 230026, Peoples R China 3.Shandong Univ Tradit Chinese Med, Jinan 250355, 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).