Two-quasiparticle tunneling in all-superconducting single-electron transistors
Istituto di Fisica, Università di Catania - viale A. Doria 6, 95125 Catania,
Istituto Nazionale di Fisica della Materia (INFM) - Unità di Catania, Italy
Accepted: 19 April 1999
We study coherent two-quasiparticle tunneling in all-superconducting single-electron transistors in the framework of the tunneling Hamiltonian formalism. We discuss the interplay of the two-quasiparticle transfer and the superposition of charge states due to Cooper-pair transitions and calculate the tunneling rate. By using this rate in a master equation we compute complete current-voltage characteristics which we compare to recent experimental results.
PACS: 73.23.Hk – Coulomb blockade; single-electron tunneling / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects
© EDP Sciences, 1999