Effects of pressure on the structure and properties of layered ferromagnetic Cr2Ge2Te6

doi:10.1016/j.physb.2020.412344

	Effects of pressure on the structure and properties of layered ferromagnetic Cr2Ge2Te6
	Dong, Enlai 1,4; Liu, Bo 4; Dong, Qing 4; Shi, Xuhan 4; Ma, Xin 4; Liu, Ran 4; Zhu, Xuebin 2; Luo, Xuan 2; Li, Xiaodong 3; Li, Yanchun 3
刊名	PHYSICA B-CONDENSED MATTER
	2020-10-15
卷号	595
关键词	Two dimensional materials Isostructural transition Metallization High pressure
ISSN号	0921-4526
DOI	10.1016/j.physb.2020.412344
通讯作者	Li, Quanjun(liquanjun@jlu.edu.cn)
英文摘要	Cr2Ge2Te6 is a rare layered ferromagnetic semiconductor that represents a promising material for novel thermoelectric and spintronic devices. High pressure is an effective way to change the electronic structure, and profoundly affects the physical and chemical properties of two-dimensional (2D) layered materials. Here we combined experimental results and theoretical calculations to investigate the structural evolution and properties of Cr2Ge2Te6 under high pressure. It is found that Cr2Ge2Te6 undergoes an isostructural phase transition from layered to non-layered structure at similar to 14 GPa, accompanied with a semiconductor to metal transition, which is distinct from the previous reports. The pressure-induced metallization is verified by the overlap of the valence and conduction bands, and the layered-to-non-layered isostructural transition is attributed to the enhanced interlayer Te-Te interaction by First-principles calculations. Our results provide a potential pathway to control the structure and property of layered materials and possibility for conceptually new devices via pressure engineering.
资助项目	National Key R&D Program of China[2018 YFA0305900] ; NSFC[11874172] ; NSFC[11374120] ; NSFC[11634004] ; NSFC[51320105007] ; JLU Science and Technology Innovative Research Team[2017TD-01]
WOS关键词	MAGNETITE FE3O4 ; TRANSITION ; PHASE ; 2D
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000573306300004
资助机构	National Key R&D Program of China ; NSFC ; JLU Science and Technology Innovative Research Team
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/104344]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Quanjun
作者单位	1.Bohai Univ, Coll New Energy, 19 Keji Rd, Jinzhou 121000, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 4.Jilin Univ, State Key Lab Superhard Mat, 2699 Qianjin St, Changchun 130012, Peoples R China
推荐引用方式 GB/T 7714	Dong, Enlai,Liu, Bo,Dong, Qing,et al. Effects of pressure on the structure and properties of layered ferromagnetic Cr2Ge2Te6[J]. PHYSICA B-CONDENSED MATTER,2020,595.
APA	Dong, Enlai.,Liu, Bo.,Dong, Qing.,Shi, Xuhan.,Ma, Xin.,...&Liu, Bingbing.(2020).Effects of pressure on the structure and properties of layered ferromagnetic Cr2Ge2Te6.PHYSICA B-CONDENSED MATTER,595.
MLA	Dong, Enlai,et al."Effects of pressure on the structure and properties of layered ferromagnetic Cr2Ge2Te6".PHYSICA B-CONDENSED MATTER 595(2020).