Combining our nano-SQUID on tip with scanning gate
measurements in the quantum Hall phase of graphene we were able to
measure and identify work and heat dissipation processes
separately. The measurements show that the dissipation is governed
by crosstalk between counterpropagating pairs of downstream and
upstream channels that appear at graphene boundaries because of
edge reconstruction.
Probing work and heat dissipation in the quantum Hall edges
of graphene

