Tunneling and relaxation of single quasiparticles in a normal-superconductor-normal single-electron transistor
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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13
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Physical Review B, Volume 89, issue 1, pp. 1-13
Abstract
We investigate the properties of a hybrid single-electron transistor, involving a small superconducting island sandwiched between normal metal leads, which is driven by dc plus ac voltages. In order to describe its properties we derive from the microscopic theory a set of coupled equations. They consist of a master equation for the probability to find excess charges on the island, with rates depending on the distribution of nonequilibrium quasiparticles. Their dynamics follows from a kinetic equation which accounts for the excitation by single-electron tunneling as well as the relaxation and eventual recombination due to the interaction with phonons. Our low-temperature results compare well with recent experimental findings obtained for ac-driven hybrid single-electron turnstiles.Description
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Heimes, A, Maisi, V, Golubev, D, Marthaler, M, Schoen, G & Pekola, J P 2014, 'Tunneling and relaxation of single quasiparticles in a normal-superconductor-normal single-electron transistor', Physical Review B, vol. 89, no. 1, 014508, pp. 1-13. https://doi.org/10.1103/PhysRevB.89.014508