Fabrication and electric-field-dependent transport measurements of mesoscopic gr

2020-03-19 01:04:02

electric field devices graphite dependent

责任者: Yuanbo Zhang;Small, J.P.;Pontius, W.V.;Philip Kim 单位: Dept. of Phys., Columbia Univ., New York, NY, USA 来源出处: Applied Physics Letters(Appl. Phys. Lett. (USA)),2005/02/14,86(7):73104-1 摘要: We have developed a unique micromechanical method to extract extremely thin graphite samples. Graphite crystallites with thicknesses ranging from 10 to 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 关键词: electric admittance;graphite;mesoscopic systems;micromechanical devices;nanostructured materials;thin film devices;mesoscopic graphite devices;micromechanical method;electric field dependent transport;thin graphite samples;graphite crystallites;electric field dependent conductance;conductance modulation;thinner crystallite devices;temperature dependent resistivity;boundary scattering;gate voltage;10 to 100 nm;2 micron;C