|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.
|发表期刊||JOURNAL OF PHYSICS D-APPLIED PHYSICS
|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.|
; 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
|资助者||King Abdullah University of Science and Technology (KAUST)
|通讯作者||Zhang, XX (reprint author), King Abdullah Univ Sci & Technol, Phys Sci & Engn PSE Div, Thuwal 239556900, Saudi Arabia.|
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).
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).
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).