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Magnetotransport through graphene nanoribbons

Craciun, Monica F.
Published in Physical Review. B, Condensed Matter. 2010, vol. 81, no. 19
Abstract We investigate magnetotransport through graphene nanoribbons as a function of gate and bias voltage, and temperature. We find that a magnetic field systematically leads to an increase in the conductance on a scale of a few tesla. This phenomenon is accompanied by a decrease in the energy scales associated to charging effects, and to hopping processes probed by temperature-dependent measurements. All the observations can be interpreted consistently in terms of strong-localization effects caused by the large disorder present, and exclude that the insulating state observed in nanoribbons can be explained solely in terms of a true gap between valence and conduction bands.
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OOSTINGA, Jeroen Bart et al. Magnetotransport through graphene nanoribbons. In: Physical Review. B, Condensed Matter, 2010, vol. 81, n° 19. https://archive-ouverte.unige.ch/unige:35121

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Deposited on : 2014-03-31

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