  Graphene-based superlattices offer a new materials playground to exploit and
control a higher number of electronic degrees of freedom, such as charge, spin,
or valley for disruptive technologies. Recently, orbital effects, emerging in
multivalley band structure lacking inversion symmetry, have been discussed as
possible mechanisms for developing orbitronics. Here, we report non-local
transport measurements in small gap hBN/graphene/hBN moir\'e superlattices
which reveal very strong magnetic field-induced chiral response which is stable
up to room temperature. The measured sign dependence of the non-local signal
with respect to the magnetic field orientation clearly indicates the
manifestation of emerging orbital magnetic moments. The interpretation of
experimental data is well supported by numerical simulations, and the reported
phenomenon stands as a formidable way of in-situ manipulation of the transverse
flow of orbital information, that could enable the design of orbitronic
devices.
