| Zugriffsnummer | 48461 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Static and dynamic transport properties of multi-terminal, multi-junction microSQUIDs realized with Nb/HfTi/Nb Josephson junctions |
| Autor(in); Institution |
Wolter, Silke; 2.4, Quantenelektronik, PTB-Braunschweig
Linek, Julian; Universität Tübingen, Physikalisches Institut, Center for Quantum Science (CQ) and LISA+, GERMANY
Weimann, Thomas; 2.4, Quantenelektronik, PTB-Braunschweig
Kölle, Dieter; Universität Tübingen, Physikalisches Institut, Center for Quantum Science (CQ) and LISA+, GERMANY
Kleiner, Reinhold; Universität Tübingen, Physikalisches Institut, Center for Quantum Science (CQ) and LISA+, GERMANY
Kieler, Oliver; 2.4, Quantenelektronik, PTB-Braunschweig
|
| Quelle/Jahr | Superconductor Science and Technology: 35 (2022), 8, 1 - 14 |
| Artikelnummer | 085006 |
| ISSN | 0953-2048 (PRINT) ; 1361-6668 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Freie Schlagworte | low-temperature superconductors ; nanotechnology ; multi-terminal ; multi-junction SQUID ; niobium technology ; current-phase relation ; SNS Josephson junctions |
| Zusammenfassung | The progressive miniaturization of superconducting quantum interference devices (SQUIDs) used, e.g. for magnetic imaging on the nanoscale or for the detection of the magnetic states of individual magnetic nanoparticles causes increasing problems in realizing a proper flux-bias scheme for reading out the device. To overcome the problem, a multi-terminal, multi-junction layout has been proposed and realized recently for the SQUID-on-tip configuration, which uses constriction-type Josephson junctions (JJ). This geometry is also interesting for SQUIDs based on overdamped superconductor-normal metal-superconductor (SNS) JJ. We fabricated four-terminal, four-junction SQUIDs based on a trilayer Nb/HfTi/Nb process and study their static and dynamic transport properties in close comparison with numerical simulations based on the resistively and capacitively shunted junction model. Simulations and measurements are in very good agreement. However, there are large differences to the transport properties of conventional two-junction SQUIDs, including unusual phase-locked and chaotic dynamic states which we describe in detail. We further extract the current-phase relation of our SNS junctions, which turns out to be purely sinusoidal within the experimental error bars. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | Deutsche Forschungsgemeinschaft (DFG) (KI 698/3-2, KO 1303/13-2), European Commission under H2020 FET Open grant ‘FIBsuperProbes’ (Grant No. 892427), COST action NANOCOHYBRI (CA16218); partially funded from EMPIR programme (Project ParaWave 17FUN10) co-financed by the Participating States, European Union’s Horizon 2020 research and innovation programme. |
| Förderinformationen (1) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: KI 698/3-2, KO 1303/13-2 |
| Förderinformationen (2) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: H2020 FET Open grant ‘FIBsuperProbes’ Förderungsnummer: 892427 |
| Förderinformationen (3) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2017 Fundamental Titel der Förderung: 17FUN10: ParaWave: Josephson travelling wave parametric amplifier and its application for metrology Förderungsnummer: 17FUN10 |
Zitierung
Wolter, S., Linek, J., Weimann, T., Kölle, D., Kleiner, R., & Kieler, O. (2022). Static and dynamic transport properties of multi-terminal, multi-junction microSQUIDs realized with Nb/HfTi/Nb Josephson junctions. Superconductor Science and Technology, 35(8), 1–14. https://doi.org/10.1088/1361-6668/ac782b