We study superconducting instabilities in van der Waals (vdW) heterostructures comprising a honeycomb antiferromagnetic insulator and a transition metal dichalcogenide (TMD). Using a functional renormalization group approach, we demonstrate that interfacial magnon exchange can induce effective attractive interactions among itinerant electrons that can drive unconventional superconducting pairing. The competition between Coulomb-mediated and magnon-mediated interactions is analyzed through the renormalization group flow, revealing that attractive Coulomb interactions naturally favor superconductivity, whereas repulsive interactions require a sufficiently strong magnon-mediated attraction to stabilize pairing. Solving the linearized gap equation with the renormalized effective interaction, we determine the critical temperature and superconducting pairing symmetry. Our results highlight the potential of a broad class of vdW heterostructures as a platform for realizing unconventional superconductivity driven by interfacial magnetic interactions.

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• Magnons
• Superconducting order parameter
• 2-dimensional systems
• Surfaces