We investigate critical current noise in short ballistic graphene Josephson junctions in the open-circuit gate-voltage limit within the McWorther model. We find flicker noise in a wide frequency range and discuss the temperature dependence of the noise amplitude as a function of the doping level. At the charge neutrality point we find a singular temperature dependence, strikingly different from the linear dependence expected for short ballistic graphene Josephson junctions under fixed gate voltage.
Springer Berlin Heidelberg
16 Apr 2021
The European Physical Journal Special Topics