  We propose a new type of quantum pump in buckled graphene nanoribbon,
adiabatically driven by a kink moving along the ribbon. From a practical point
of view, pumps with moving scatterers present advantages as compared to
gate-driven pumps, like enhanced charge transfer per cycle per channel. The
kink geometry is simplified by truncating the spatial arrangement of carbon
atoms with the classical $\phi^4$ model solution, including a width
renormalization following from the Su-Schrieffer-Heeger model for carbon
nanostructures. We demonstrate numerically, as a proof of concept, that for
moderate deformations a stationary kink at the ribbon center may block the
current driven by the external voltage bias. In the absence of a bias, a moving
kink leads to highly-effective pump effect, with a charge per unit cycle
dependent on the gate voltage.
