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. 2005 May 6;94(17):176803.
doi: 10.1103/PhysRevLett.94.176803. Epub 2005 May 3.

Electric field modulation of galvanomagnetic properties of mesoscopic graphite

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Electric field modulation of galvanomagnetic properties of mesoscopic graphite

Yuanbo Zhang et al. Phys Rev Lett. .

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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