Fabrication and Electric Field Dependent Transport Measurements of Mesoscopic Graphite Devices
Yuanbo Zhang, Joshua P. Small, William V. Pontius, Philip Kim
Abstract
We have developed a unique micromechanical method to extract extremely thin graphite samples. Graphite crystallites with thicknesses ranging from 10 - 100 nm and lateral size 2 μm are extracted from bulk. Mesoscopic graphite devices are fabricated from these samples for electric field dependent conductance measurements. Strong conductance modulation as a function of gate voltage is observed in the thinner crystallite devices. The temperature dependent resistivity measurements show more boundary scattering contribution in the thinner graphite samples.
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