Title :
3-D Mapping of Sensitivity of Graphene Hall Devices to Local Magnetic and Electrical Fields
Author :
Rajkumar, R.K. ; Manzin, Alessandra ; Cox, David C. ; Silva, S.R.P. ; Tzalenchuk, A. ; Kazakova, Olga
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
We report the response of sub-micron epitaxial graphene Hall devices to localized and inhomogeneous magnetic field produced by an MFM tip. We analyze the magneto-transport properties of epitaxial graphene and report the independent contribution of magnetic and electric fields in the measured transverse voltage maps with respect to the lateral and vertical position of the tip. A finite element model has also been developed to support the experimental results.
Keywords :
Hall effect; finite element analysis; graphene; magnetic epitaxial layers; magnetic force microscopy; magnetic sensors; 3D mapping; MFM tip; electrical fields; epitaxial graphene; finite element model; graphene hall device sensitivity; inhomogeneous magnetic fields; local magnetic fields; magneto-transport properties; sub-micron epitaxial graphene Hall device response; voltage maps; Electric potential; Epitaxial growth; Graphene; Magnetic devices; Magnetic resonance imaging; Magnetic separation; Voltage measurement; Epitaxial graphene; Hall sensor; numerical modeling;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2243708
