A mass gap in the passive nanowire lifts the exact cancellation of plasmon modes generated by quantum phase slips in the active wire, yielding a finite Coulomb drag voltage that increases from weak values in short wires to a maximum set by mutual capacitance in long wires.
It has two useful limits: ⟨V1(I1)⟩ ∝ Φ0ueffγ2 1 L ω2λ11 c T 2λ11−3 I1, T ≫ I1Φ0, I 2λ11−2 1 , T ≪ I1Φ0
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Mass-induced Coulomb drag in capacitively coupled superconducting nanowires
A mass gap in the passive nanowire lifts the exact cancellation of plasmon modes generated by quantum phase slips in the active wire, yielding a finite Coulomb drag voltage that increases from weak values in short wires to a maximum set by mutual capacitance in long wires.