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Paper detail

Impurities as a source of flicker noise in graphene

We experimentally study the effect of different scattering potentials on the flicker noise observed in graphene devices on silica substrates. The noise in nominally identical devices is seen to behave in two distinct ways as a function of carrier concentration, changing either monotonically or nonmonotonically. We attribute this to the interplay between long- and short-range scattering mechanisms. Water is found to significantly enhance the noise magnitude and change the type of the noise behaviour. By using a simple model, we show that water is a source of long-range scattering.

preprint2011arXivOpen access
A. A. KaverzinA. S. MayorovA. ShytovD. W. Horsell
cond-mat.mes-hallcond-mat.mtrl-sci
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A. A. KaverzinA. S. MayorovA. ShytovD. W. Horsell

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