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Electric Field Modulation of Galvanomagnetic Properties of Mesoscopic Graphite

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arxiv cond-mat/0410315 v1 pith:VLBSJLWD submitted 2004-10-13 cond-mat.mes-hall

classification cond-mat.mes-hall
keywords electricfieldgalvanomagneticgraphitemagneto-resistancemesoscopicmodulationoscillations
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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.

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