Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet

doi:10.1088/0022-3727/49/42/425005

IMR OpenIR

	Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet
	Zhang,Qiang 1; Li,Peng 1; He,Xin 1; Li,Jun 1; Wen,Yan 1; Ren,Wencai 2; Cheng,Hui-ming 2; Yang,Yang 3; Al-Hadeethi,Yas F 4; Zhang,Xixiang 1
	2016-09-27
发表期刊	Journal of Physics D: Applied Physics
ISSN	0022-3727
卷号	49 期号:42
摘要	Abstract A bulk sample of pressed graphene sheets was prepared under hydraulic pressure (~150?MPa). The cross-section of the sample demonstrates a layered structure, which leads to 3D electrical transport properties with anisotropic mobility. The electrical transport properties of the sample were measured over a wide temperature (2–400?K) and magnetic field (?140?kOe?H?140?kOe) range. The magnetoresistance measured at a fixed temperature can be described by R(H,θ)=R(εθH,0) with εθ=(cos2θ+γ?2sin2θ)1/2, where γ is the mobility anisotropy constant and θ is the angle between the normal of the sample plane and the magnetic field. The large linear magnetoresistance (up to 36.9% at 400?K and 140 kOe) observed at high fields is ascribed to a classical magnetoresistance caused by mobility fluctuation (Δμ). The magnetoresistance value at 140 kOe was related to the average mobility (〈μ〉) because of the condition Δμ<〈μ〉. The carrier concentration remained constant and the temperature-dependent resistivity was proportional to the average mobility, as verified by Kohler’s rule. Anisotropic dephasing length was deduced from weak localization observed at low temperatures.
关键词	graphene sheets 3D anisotropy linear magnetoresistance mobility fluctuation
DOI	10.1088/0022-3727/49/42/425005
语种	英语
WOS记录号	IOP:0022-3727-49-42-425005
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80939
作者单位	1.King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering (PSE) Division, Thuwal 23955-6900, Saudi Arabia 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China 3.King Abdullah University of Science and Technology (KAUST), Imaging and Characterization Core Labs, Thuwal 23955-6900, Saudi Arabia 4.Department of Physics, King Abdulaziz University, Jeddah, Makkah 21589, Saudi Arabia
推荐引用方式 GB/T 7714	Zhang,Qiang,Li,Peng,He,Xin,et al. Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet[J]. Journal of Physics D: Applied Physics,2016,49(42).
APA	Zhang,Qiang.,Li,Peng.,He,Xin.,Li,Jun.,Wen,Yan.,...&Zhang,Xixiang.(2016).Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet.Journal of Physics D: Applied Physics,49(42).
MLA	Zhang,Qiang,et al."Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet".Journal of Physics D: Applied Physics 49.42(2016).