Nonlinear Response Approach to Cooper Pair Tunneling in Ultrasmall SIS Junctions

Details Nonlinear Response Approach to Cooper Pair Tunneling in Ultrasmall SIS Junctions Nonlinear Response Approach to Cooper Pair Tunneling in Ultrasmall SIS Junctions

1995-03-15

arxiv.org/abs/cond-mat/9503080v1

Physics

Condensed Matter

9 pages, RevTeX, 2 figures appended

Scientific paper

Single-charge tunneling in ultrasmall voltage biased SIS junctions in a high-impedance electromagnetic environment is considered. The Cooper pair current is calculated at T=0 on the basis of the elementary tunnel Hamiltonian for quasiparticles. Therefore, the transfer of Cooper pairs emerges automatically as an effect of higher order perturbation theory. The supercurrent also depends on the dissipative part of the Josephson current amplitude.

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