Abstract:
The supercurrent for the surface superconductivity of a
flat-band multilayered rhombohedral graphene is calculated.
Despite the absence of dispersion of the excitation spectrum, the
supercurrent is finite. The critical current is proportional to
the zero-temperature superconducting gap, i.e., to the
superconducting critical temperature and to the size of the flat
band in the momentum space.
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