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Quantum capacitance and charge sensing of a superconducting double dot

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dc.contributor.authorLambert, Nicholas J.
dc.contributor.authorEsmail, Adam A.
dc.contributor.authorEdwards, Megan
dc.contributor.authorPollock, Felix A.
dc.contributor.authorLovett, Brendon William
dc.contributor.authorFerguson, Andrew
dc.date.accessioned2016-09-30T12:30:12Z
dc.date.available2016-09-30T12:30:12Z
dc.date.issued2016-09
dc.identifier.citationLambert , N J , Esmail , A A , Edwards , M , Pollock , F A , Lovett , B W & Ferguson , A 2016 , ' Quantum capacitance and charge sensing of a superconducting double dot ' , Applied Physics Letters , vol. 109 , no. 11 , 112603 . https://doi.org/10.1063/1.4962811en
dc.identifier.issn0003-6951
dc.identifier.otherPURE: 245865128
dc.identifier.otherPURE UUID: 9c1d3b33-5539-44eb-915e-84ff36668f97
dc.identifier.otherScopus: 84988345465
dc.identifier.otherORCID: /0000-0001-5142-9585/work/47136577
dc.identifier.otherWOS: 000384400300030
dc.identifier.urihttps://hdl.handle.net/10023/9582
dc.descriptionWe acknowledge the support from Hitachi Cambridge Laboratory and EPSRC Grant No. EP/K027018/1. A.J.F. is supported by a Hitachi Research fellowship.en
dc.description.abstractWe study the energetics of a superconducting double dot, by measuring both the quantum capacitance of the device and the response of a nearby charge sensor. We observe different behaviour for odd and even charge states and describe this with a model based on the competition between the charging energy and the superconducting gap. We also find that, at finite temperatures, thermodynamic considerations have a significant effect on the charge stability diagram.
dc.format.extent4
dc.language.isoeng
dc.relation.ispartofApplied Physics Lettersen
dc.rights© 2016, the Author(s). This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at scitation.aip.org / http://dx.doi.org/10.1063/1.4962811en
dc.subjectQC Physicsen
dc.subjectT Technologyen
dc.subjectNDASen
dc.subject.lccQCen
dc.subject.lccTen
dc.titleQuantum capacitance and charge sensing of a superconducting double doten
dc.typeJournal itemen
dc.contributor.sponsorEPSRCen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1063/1.4962811
dc.description.statusPeer revieweden
dc.identifier.grantnumberen


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