Magnetization control of the critical current in a S-(S/F)-S superconducting switch

Kammermeier, Lukas; Scheer, Elke

Magnetization control of the critical current in a S-(S/F)-S superconducting switch

Dateien

Kammermeier_2-i75w69zklzvs3.pdfGröße: 915 KBDownloads: 3

Datum

2024

Angaben zur Forschungsförderung

Deutsche Forschungsgemeinschaft (DFG): 317077841

Open Access-Veröffentlichung

Open Access Hybrid

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Applied Physics Letters. AIP Publishing. 2024, 124(16), 162605. ISSN 0003-6951. eISSN 1077-3118. Verfügbar unter: doi: 10.1063/5.0202571

Zusammenfassung

We show the control of the critical current I_c of a superconductor–superconductor/ferromagnet–superconductor [S-(S/F)-S] type switch by the magnetization state of the F. The inverse proximity effect of a S/F bilayer is used to define the weak link and hence the maximum critical current of the junction. The magnetization of the F lead is set by an external magnetic field. We show that the critical current in zero field depends on the remanent magnetization state via stray-field effects and thereby allows for a post-manufacturing control of the junction's properties, in particular the tunability between a maximal critical current and a full suppression of I_c without applying a persistent magnetic field. We propose a simplified model based on the relative orientation of magnetic domains that explains our findings qualitatively.

Fachgebiet (DDC)

530 Physik

Schlagwörter

Exchange interactions, Ferromagnetic materials, Magnetic ordering, Phase transitions, Superconductivity, Supercurrent, Proximity effects, Logic elements, Data storage device, Interfaces

Zitieren

ISO 690

KAMMERMEIER, Lukas, Elke SCHEER, 2024. Magnetization control of the critical current in a S-(S/F)-S superconducting switch. In: Applied Physics Letters. AIP Publishing. 2024, 124(16), 162605. ISSN 0003-6951. eISSN 1077-3118. Verfügbar unter: doi: 10.1063/5.0202571

BibTex

@article{Kammermeier2024-04-19Magne-69913,
  year={2024},
  doi={10.1063/5.0202571},
  title={Magnetization control of the critical current in a S-(S/F)-S superconducting switch},
  number={16},
  volume={124},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Kammermeier, Lukas and Scheer, Elke},
  note={Article Number: 162605}
}

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