Abstract
We present the phonon-limited electron mobility in planar T graphene and find that the mobility ∝T−5.53 at low temperature T. With the increase of temperature, the power exponent 5.53 decreases towards 1. Excitingly, the room-temperature mobility of planar T graphene is 2.78×106 cm2/Vs which is about 20.59 times as large as that of n-type graphene at the same carrier density. Different from graphene with longitudinal acoustic phonon dominating the mobility, an in-plane optical phonon mode contributes the most to the mobility of planar T graphene.
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