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

IMR OpenIR

	Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet
	Zhang, Q; Li, P; He, X; Li, J; Wen, Y; Ren, WC; Cheng, HM; Yang, Y; Al-Hadeethi, YF; Zhang, XX; Zhang, XX (reprint author), King Abdullah Univ Sci & Technol, Phys Sci & Engn PSE Div, Thuwal 239556900, Saudi Arabia.
	2016-10-26
发表期刊	JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN	0022-3727
卷号	49 期号:42
摘要	A bulk sample of pressed graphene sheets was prepared under hydraulic pressure (similar to 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, theta) = R(epsilon H-theta, 0) with epsilon(theta) =(cos(2)theta + gamma(-2) sin(2)theta)(1/2), where gamma is the mobility anisotropy constant and theta 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 (Delta mu). The magnetoresistance value at 140 kOe was related to the average mobility () because of the condition Delta mu < . 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.
部门归属	[zhang, qiang ; li, peng ; he, xin ; li, jun ; wen, yan ; zhang, xixiang] king abdullah univ sci & technol, phys sci & engn pse div, thuwal 239556900, saudi arabia ; [ren, wencai ; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [yang, yang] king abdullah univ sci & technol, imaging & characterizat core labs, thuwal 239556900, saudi arabia ; [al-hadeethi, yas f.] king abdulaziz univ, dept phys, jeddah 21589, makkah, saudi arabia
关键词	Graphene Sheets 3d Anisotropy Linear Magnetoresistance Mobility Fluctuation
学科领域	Physics, Applied
资助者	King Abdullah University of Science and Technology (KAUST)
收录类别	sci
语种	英语
WOS记录号	IOP:0022-3727-49-42-425005
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/76231
专题	中国科学院金属研究所
通讯作者	Zhang, XX (reprint author), King Abdullah Univ Sci & Technol, Phys Sci & Engn PSE Div, Thuwal 239556900, Saudi Arabia.
推荐引用方式 GB/T 7714	Zhang, Q,Li, P,He, X,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, Q.,Li, P.,He, X.,Li, J.,Wen, Y.,...&Zhang, XX .(2016).Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet.JOURNAL OF PHYSICS D-APPLIED PHYSICS,49(42).
MLA	Zhang, Q,et al."Mobility controlled linear magnetoresistance with 3D anisotropy in a layered graphene pallet".JOURNAL OF PHYSICS D-APPLIED PHYSICS 49.42(2016).