Topological insulator based axial superconducting quantum interferometer structures

Topological insulator based axial superconducting quantum interferometer structures

Nanoscale superconducting quantum interference devices are fabricated in-situ from a single Bi 0.26 Sb 1.74 Te 3 nanoribbon that is defined using selective-area growth and contacted with superconducting Nb electrodes via a shadow mask technique. We present h / ( 2 e ) magnetic flux periodic interfer...

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Veröffentlicht in:Superconductor science & technology 2024-08, Vol.37 (8), p.85028
Hauptverfasser: Zimmermann, Erik, Rehman Jalil, Abdur, Schleenvoigt, Michael, Karthein, Jan, Frohn, Benedikt, Behner, Gerrit, Lentz, Florian, Trellenkamp, Stefan, Neumann, Elmar, Schüffelgen, Peter, Lüth, Hans, Grützmacher, Detlev, Schäpers, Thomas
Format: Artikel
Sprache:eng
Schlagworte:
interferometers
nanoribbon
SQUID
topological insulator
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Zusammenfassung:Nanoscale superconducting quantum interference devices are fabricated in-situ from a single Bi 0.26 Sb 1.74 Te 3 nanoribbon that is defined using selective-area growth and contacted with superconducting Nb electrodes via a shadow mask technique. We present h / ( 2 e ) magnetic flux periodic interference in both, fully and non-fully proximitized nanoribbons. The pronounced oscillations are attributed to interference effects of coherent transport through the topological surface states encompassing the cross-section of the nanoribbon.
ISSN:0953-2048
1361-6668
DOI:10.1088/1361-6668/ad637d