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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
ISSN0022-3727
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
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).
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