Fabrication Optimization of Suspended Stencil Mask Lithography for Multi-Terminal Josephson Junctions

Fuente: arXiv
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Autores principales: Teller, Justus, Jalil, Abdur Rehman, Lentz, Florian, Grützmacher, Detlev, Schäpers, Thomas
Formato: Preprint
Publicado: 2025
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author Teller, Justus
Jalil, Abdur Rehman
Lentz, Florian
Grützmacher, Detlev
Schäpers, Thomas
author_facet Teller, Justus
Jalil, Abdur Rehman
Lentz, Florian
Grützmacher, Detlev
Schäpers, Thomas
contents Stencil mask lithography is an advanced technique for fully in-situ fabricating Josephson junctions, which is increasingly being used for multi-terminal Josephson junctions. This study provides information on the optimal mask design and mask reliability. For this, 270 mask designs were systematically fabricated and investigated under scanning electron microscope. Reliable statements are made about mask yield, minimal dimensions, and systematic dependencies on the number of superconducting terminals. We find that stencil mask lithography can be used reliably for fabricating multi-terminal Josephson junctions, enabling lateral mask dimensions down to 40$\,$nm on average.
format Preprint
id arxiv_https___arxiv_org_abs_2512_16690
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Fabrication Optimization of Suspended Stencil Mask Lithography for Multi-Terminal Josephson Junctions
Teller, Justus
Jalil, Abdur Rehman
Lentz, Florian
Grützmacher, Detlev
Schäpers, Thomas
Applied Physics
Stencil mask lithography is an advanced technique for fully in-situ fabricating Josephson junctions, which is increasingly being used for multi-terminal Josephson junctions. This study provides information on the optimal mask design and mask reliability. For this, 270 mask designs were systematically fabricated and investigated under scanning electron microscope. Reliable statements are made about mask yield, minimal dimensions, and systematic dependencies on the number of superconducting terminals. We find that stencil mask lithography can be used reliably for fabricating multi-terminal Josephson junctions, enabling lateral mask dimensions down to 40$\,$nm on average.
title Fabrication Optimization of Suspended Stencil Mask Lithography for Multi-Terminal Josephson Junctions
topic Applied Physics
url https://arxiv.org/abs/2512.16690