Electric field effect devices based on mesoscopic graphite are fabricated for galvanomagnetic measurements. Strong modulation of magneto-resistance and Hall resistance as a function of gate voltage is observed as sample thickness approaches the screening length. Electric field dependent Landau level formation is detected from Shubnikov de Haas oscillations in magneto-resistance. The effective mass of electron and hole carriers has been measured from the temperature dependant behavior of these oscillations.
@article{arxiv.cond-mat/0410315,
title = {Electric Field Modulation of Galvanomagnetic Properties of Mesoscopic Graphite},
author = {Yuanbo Zhang and Joshua P. Small and Michael E. S. Amori and Philip Kim},
journal= {arXiv preprint arXiv:cond-mat/0410315},
year = {2009}
}
Comments
4 pages, 4 figures included, submitted to Phys. Rev. Lett