  We investigate magnetic deflection of currents that flow across the
Aharonov-Bohm interferom- eters defined in graphene. We consider devices
induced by closed n-p junctions in nanoribbons as well as etched quantum rings.
The deflection effects on conductance are strictly correlated with the
properties of the ring-localized quasibound states. The energy of these states,
their lifetime and the periodicity of the conductance oscillations are
determined by orientation of the current circulating within the interferometer.
Formation of high harmonics of conductance at high magnetic field and the role
of intervalley scattering are discussed.
