Linear magnetoresistance in three-dimensional carbon nanostructure with periodic spherical voids

We report electrical transport properties of carbon nanostructures with close-packed spherical voids. Under zero magnetic field, a non-metallic behavior is observed. With increasing magnetic field, magnetoresistance (MR) crosses over from quadratic to linear dependence. Longitudinal response, typica...

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Bibliographic Details
Published in:Applied physics letters 2015-07, Vol.107 (2)
Main Authors: Wang, Leizhi, Yin, Ming, Abdi, Mohammed, Datta, Timir
Format: Article
Language:English
Subjects:
Applied physics
Carbon
Magnetic fields
Magnetic properties
Magnetoresistance
Magnetoresistivity
Nanostructure
Temperature dependence
Three dimensional flow
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Summary:We report electrical transport properties of carbon nanostructures with close-packed spherical voids. Under zero magnetic field, a non-metallic behavior is observed. With increasing magnetic field, magnetoresistance (MR) crosses over from quadratic to linear dependence. Longitudinal response, typically negligible in most materials, exhibits the same value and field-temperature dependence as transverse MR. At intermediate angles (0°–90°) MR is also found to be independent of the direction of magnetic field. It is reasoned that orientation-insensitive, linear MR is due to distorted current flow in the 3-dimensional porous structures of this system.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4926606