Josephson tunnel junction controlled by quasiparticle injection

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2005
Major/Subject
Mcode
Degree programme
Language
en
Pages
023908/1-4
Series
Journal of Applied Physics, Volume 97, Issue 2
Abstract
A Josephson tunnel junction transistor based on quasiparticle injection is proposed. Its operationrelies on the manipulation of the electron distribution in one of the junction electrodes. This isaccomplished by injecting quasiparticle current through the junction electrode by two additionaltunnel-coupled superconductors. Both large supercurrent enhancement and fast quenching can beachieved with respect to equilibrium by varying quasiparticle injection for proper temperatureregimes and suitable superconductor combinations. Combined with large power gain, this makes thedevice attractive for applications where reduced noise and low-power dissipation are required.
Description
Keywords
Josephson junctions, quasiparticle injection, junction electrodes, collective excitations, transistors, superconductors, superconductivity
Other note
Citation
Giazotto, Francesco & Pekola, Jukka. 2005. Josephson tunnel junction controlled by quasiparticle injection. Journal of Applied Physics. Volume 97, Issue 2. 023908/1-4. ISSN 0021-8979 (printed). DOI: 10.1063/1.1833576.