Electric field modulation of galvanomagnetic properties of mesoscopic graphite |
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| Authors: | Zhang Yuanbo Small Joshua P Amori Michael E S Kim Philip |
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| Affiliation: | Department of Physics and the Columbia Nanoscale Science and Engineering Center, Columbia University, New York, New York 10027, USA. |
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| Abstract: | Electric field effect devices based on mesoscopic graphite are fabricated for galvanomagnetic measurements. Strong modulation of magnetoresistance and Hall resistance as a function of the gate voltage is observed as the sample thickness approaches the screening length. Electric field dependent Landau level formation is detected from Shubnikov-de Haas oscillations. The effective mass of electron and hole carriers has been measured from the temperature dependent behavior of these oscillations. |
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