globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.05.008
论文题名:
Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance
作者: Wang J.; Qiao J.; Xu K.; Chen J.; Zhao Y.; Qiu B.; Lin Z.; Ji W.; Chai Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:17
起始页码: 1451
结束页码: 1459
语种: 英语
中文关键词: 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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170064
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Wang J.,Qiao J.,Xu K.,et al. Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance[J]. Science Bulletin,2020-01-01,65(17)
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