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Environmentally activated tunneling events in a hybrid single-electron box

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Saira, O.-P.
dc.contributor.author Möttönen, M.
dc.contributor.author Maisi, V. F.
dc.contributor.author Pekola, Jukka P.
dc.date.accessioned 2015-05-26T09:01:03Z
dc.date.available 2015-05-26T09:01:03Z
dc.date.issued 2010
dc.identifier.citation Saira, O.-P. & Möttönen, M. & Maisi, V. F. & Pekola, Jukka. 2010. Environmentally activated tunneling events in a hybrid single-electron box. Physical Review B. Volume 82, Issue 15. 155443/1-6. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.82.155443. en
dc.identifier.issn 1098-0121 (printed)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/16220
dc.description.abstract We have measured individual tunneling events and Coulomb step shapes in single-electron boxes with opaque superconductor–normal metal tunnel junctions. We observe anomalous broadening of the Coulomb step with decreasing temperature in a manner that is consistent with activation of first-order tunneling events by an external dissipative electromagnetic environment. We demonstrate that the rates for energetically unfavorable tunneling events saturate to finite values at low temperatures, and that the saturation level can be suppressed by more than an order of magnitude by a capacitive shunt near the device. The findings are important in assessing the performance limits of any single-electronic device. In particular, master-equation-based simulations show that the electromagnetic environment realized in the capacitively shunted devices allows for a metrologically accurate charge pump based on hybrid tunnel junctions. en
dc.format.extent 155443/1-6
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society (APS) en
dc.relation.ispartofseries Physical Review B en
dc.relation.ispartofseries Volume 82, Issue 15
dc.rights © 2010 American Physical Society (APS). http://www.aps.org/ en
dc.subject.other Physics en
dc.title Environmentally activated tunneling events in a hybrid single-electron box en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder American Physical Society (APS)
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Department of Applied Physics en
dc.contributor.department Teknillisen fysiikan laitos fi
dc.subject.keyword tunneling events en
dc.subject.keyword Coulomb step shapes en
dc.subject.keyword single-electron box en
dc.subject.keyword superconductors en
dc.subject.keyword tunnel junctions en
dc.identifier.urn URN:NBN:fi:aalto-201505262882
dc.type.dcmitype text en
dc.identifier.doi 10.1103/physrevb.82.155443
dc.type.version Final published version en


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