Tunnneling and relaxation of single quasiparticles in a normal-superconductor-normal single-electron transistor

Andreas Heimes, Ville F. Maisi, Dimitri S. Golubev, Michael Marhaler, Gerd Schön, Jukka P. Pekola

Research output: Contribution to journalArticleScientificpeer-review

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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.
Original languageEnglish
Article number014508
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume89
Issue number1
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

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Single electron transistors
single electron transistors
Electron tunneling
Phonons
Superconducting materials
Metals
Kinetics
Electrons
Electric potential
electron tunneling
kinetic equations
phonons
Temperature
electric potential
excitation
electrons
interactions

Cite this

Heimes, Andreas ; Maisi, Ville F. ; Golubev, Dimitri S. ; Marhaler, Michael ; Schön, Gerd ; Pekola, Jukka P. / Tunnneling and relaxation of single quasiparticles in a normal-superconductor-normal single-electron transistor. In: Physical Review B: Condensed Matter and Materials Physics. 2014 ; Vol. 89, No. 1.
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Tunnneling and relaxation of single quasiparticles in a normal-superconductor-normal single-electron transistor. / Heimes, Andreas; Maisi, Ville F.; Golubev, Dimitri S.; Marhaler, Michael; Schön, Gerd; Pekola, Jukka P.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 89, No. 1, 014508, 2014.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Heimes, Andreas

AU - Maisi, Ville F.

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AU - Marhaler, Michael

AU - Schön, Gerd

AU - Pekola, Jukka P.

PY - 2014

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