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DOI	10.1016/j.scib.2020.05.008
	Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance
	Wang J.; Qiao J.; Xu K.; Chen J.; Zhao Y.; Qiu B.; Lin Z.; Ji W.; Chai Y.
发表日期	2020
ISSN	20959273
起始页码	1451
结束页码	1459
卷号	65 期号:17
英文摘要	The atomic structure of quasi one-dimensional (1D) van der Waals materials can be regarded as the stacking of atomic chains to form thin flakes or nanoribbons, which substantially differentiates them from typical two-dimensional (2D) layered materials and 1D nanotube/nanowire array. Here we present our studies on quasi 1D gold selenide (AuSe) that possesses highly anisotropic crystal structure, excellent electrical conductivity, giant magnetoresistance, and unusual reentrant metallic behavior. The low in-plane symmetry of AuSe gives rise to its high anisotropy of vibrational behavior. In contrast, quasi 1D AuSe exhibits high in-plane electrical conductivity along the directions of both atomic chains and perpendicular one, which can be understood as a result of strong interchain interaction. We found that AuSe exhibits a near quadratic nonsaturating giant magnetoresistance of 1841% with the magnetic field perpendicular to its in-plane. We also observe unusual reentrant metallic behavior, which is caused by the carrier mismatch in the multiband transport. Our works help to establish fundamental understandings on quasi 1D van der Waals semimetallic AuSe and identify it as a new candidate for exploring giant magnetoresistance and compensated semimetals. © 2020 Science China Press
关键词	Anisotropic Giant magnetoresistance Quasi one-dimensional (1D) materials Two-dimensional (2D) materials van der Waals
英文关键词	Anisotropy; Atoms; Crystal atomic structure; Electric conductivity; Gold compounds; Selenium compounds; Van der Waals forces; Anisotropic crystals; Electrical conductivity; Interchain interactions; Layered material; Metallic behaviors; Quasi-one dimensional; Two Dimensional (2 D); Vibrational behavior; Giant magnetoresistance
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207208
作者单位	Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, Hong Kong; The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518054, China; Beijing Key Laboratory of Optoelectronic Functional Materials & MicroNano Devices, Renmin University of China, Beijing, 100872, China
推荐引用方式 GB/T 7714	Wang J.,Qiao J.,Xu K.,et al. Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance[J],2020,65(17).
APA	Wang J..,Qiao J..,Xu K..,Chen J..,Zhao Y..,...&Chai Y..(2020).Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance.Science Bulletin,65(17).
MLA	Wang J.,et al."Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance".Science Bulletin 65.17(2020).