  Non-reciprocal plasmons in current-driven, isotropic, and homogenous graphene
with proximal metallic gates is theoretically explored. Nearby metallic gates
screen the Coulomb interactions, leading to linearly dispersive acoustic
plasmons residing close to its particle-hole continuum counterpart. We show
that the applied bias leads to spectral broadband focused plasmons whose
resonance linewidth is dependent on the angular direction relative to the
current flow due to Landau damping. We predict that forward focused
non-reciprocal plasmons are possible with accessible experimental parameters
and setup.
