Topological insulator based axial superconducting quantum interferometer structures

Erik Zimmermann; Abdur Rehman Jalil; Michael Schleenvoigt; Jan Karthein; Benedikt Frohn; Gerrit Behner; Florian Lentz; Stefan Trellenkamp; Elmar Neumann; Peter Schüffelgen; Hans Lüth; Detlev Grützmacher; Thomas Schäpers

Topological insulator based axial superconducting quantum interferometer structures

Mesoscale and Nanoscale Physics 2024-03-21 v1

Authors: Erik Zimmermann , Abdur Rehman Jalil , Michael Schleenvoigt , Jan Karthein , Benedikt Frohn , Gerrit Behner , Florian Lentz , Stefan Trellenkamp , Elmar Neumann , Peter Schüffelgen , Hans Lüth , Detlev Grützmacher , Thomas Schäpers

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Abstract

Nanoscale superconducting quantum interference devices (SQUIDs) 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 $h/(2e)$ magnetic flux periodic interference in both, fully and non-fully proximitized nanoribbons. The pronounced oscillations are explained by interference effects of coherent transport through topological surface states surrounding the cross-section of the nanoribbon.

Keywords

superconducting quantum interference devices topological insulators topological insulator

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@article{arxiv.2403.13689,
  title  = {Topological insulator based axial superconducting quantum interferometer structures},
  author = {Erik Zimmermann and Abdur Rehman Jalil and Michael Schleenvoigt and Jan Karthein and Benedikt Frohn and Gerrit Behner and Florian Lentz and Stefan Trellenkamp and Elmar Neumann and Peter Schüffelgen and Hans Lüth and Detlev Grützmacher and Thomas Schäpers},
  journal= {arXiv preprint arXiv:2403.13689},
  year   = {2024}
}

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7 pages, 4 figures, supplementary material

Topological insulator based axial superconducting quantum interferometer structures

Abstract

Keywords

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