Quasi one-dimensional van der Waals gold selenide with strong interchain interaction and giant magnetoresistance

• 作者: Bocheng Qiu Jiewei Chen Jingli Wang Jingsi Qiao Kang Xu Wei Ji Yang Chai Yuda Zhao Ziyuan Lin
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2020,（17）
• 页码范围: 1451-1459
• 页数: 9页
• 语种: 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 1 D 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 inplane 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.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Jingli Wang		1	0	0.0	0.0
2	Jingsi Qiao		1	0	0.0	0.0
3	Kang Xu		1	0	0.0	0.0
4	Jiewei Chen		1	0	0.0	0.0
5	Yuda Zhao		1	0	0.0	0.0
6	Bocheng Qiu		1	0	0.0	0.0
7	Ziyuan Lin		1	0	0.0	0.0
8	Wei Ji		1	0	0.0	0.0
9	Yang Chai		1	0	0.0	0.0