Loading [MathJax]/extensions/tex2jax.js

High-Tc Josephson Junction Arrays Fabricated by He-FIB

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Max Pröpper
  • Dominik Hanisch
  • Christoph Schmid
  • Marius Neumann

External Research Organisations

  • Technische Universität Braunschweig
  • University of Tübingen

Details

Original languageEnglish
JournalIEEE Transactions on Applied Superconductivity
Early online date12 Dec 2024
Publication statusE-pub ahead of print - 12 Dec 2024
Externally publishedYes

Abstract

The development of a fabrication process for Josephson junctions (JJs) using a direct-write helium-focused ion beam (He-FIB) technique provides the opportunity to control parameters such as the critical current <FOR VERIFICATION>$I$c and normal-state resistance <FOR VERIFICATION>$R$n of individual JJs in YBa2Cu3O7-xJJ arrays. Such arrays could be used as a voltage calibration standard that is operated at higher temperatures and higher driving frequencies than the currently used niobium JJ arrays. This study presents the fabrication process of 79 YBa2Cu3O7-xJJs in a meander array design using a direct writing He-FIB process with the same irradiation dose for all JJs. In this design, each of the JJs can be measured individually, and adjacent JJs that exhibit similar and suitable parameters for a voltage standard array can be measured in series. The scattering of the JJ parameters was investigated at 5 K and resulted in a spread in <FOR VERIFICATION>$I$c of about 60% and in <FOR VERIFICATION>$R$n of 25%. However, a couple of subarrays with a spread lower than 10% could be found. In addition, these JJ subarrays were irradiated with high-frequency radiation in the GHz and THz range at a temperature of 20 K and synchronization of up to three JJs was observed in both frequency ranges.

Keywords

    He-FIB, HTS, JJ array, Josephson junction (JJ), Shapiro step, THz, YBaCuO

ASJC Scopus subject areas

Cite this

High-Tc Josephson Junction Arrays Fabricated by He-FIB. / Pröpper, Max; Hanisch, Dominik; Schmid, Christoph et al.
In: IEEE Transactions on Applied Superconductivity, 08.2025.

Research output: Contribution to journalArticleResearchpeer review

Pröpper, M, Hanisch, D, Schmid, C, Neumann, M, Ritter, PJ, Tucholke, MA, Goldobin, E, Koelle, D, Kleiner, R, Schilling, M & Hampel, B 2025, 'High-Tc Josephson Junction Arrays Fabricated by He-FIB', IEEE Transactions on Applied Superconductivity. https://doi.org/10.1109/TASC.2024.3516741
Pröpper, M., Hanisch, D., Schmid, C., Neumann, M., Ritter, P. J., Tucholke, M. A., Goldobin, E., Koelle, D., Kleiner, R., Schilling, M., & Hampel, B. (2025). High-Tc Josephson Junction Arrays Fabricated by He-FIB. IEEE Transactions on Applied Superconductivity. Advance online publication. https://doi.org/10.1109/TASC.2024.3516741
Pröpper M, Hanisch D, Schmid C, Neumann M, Ritter PJ, Tucholke MA et al. High-Tc Josephson Junction Arrays Fabricated by He-FIB. IEEE Transactions on Applied Superconductivity. 2025 Aug. Epub 2024 Dec 12. doi: 10.1109/TASC.2024.3516741
Pröpper, Max ; Hanisch, Dominik ; Schmid, Christoph et al. / High-Tc Josephson Junction Arrays Fabricated by He-FIB. In: IEEE Transactions on Applied Superconductivity. 2025.
Download
@article{cf88d4e126964a3aaed1aa661846779e,
title = "High-Tc Josephson Junction Arrays Fabricated by He-FIB",
abstract = "The development of a fabrication process for Josephson junctions (JJs) using a direct-write helium-focused ion beam (He-FIB) technique provides the opportunity to control parameters such as the critical current $I$c and normal-state resistance $R$n of individual JJs in YBa2Cu3O7-xJJ arrays. Such arrays could be used as a voltage calibration standard that is operated at higher temperatures and higher driving frequencies than the currently used niobium JJ arrays. This study presents the fabrication process of 79 YBa2Cu3O7-xJJs in a meander array design using a direct writing He-FIB process with the same irradiation dose for all JJs. In this design, each of the JJs can be measured individually, and adjacent JJs that exhibit similar and suitable parameters for a voltage standard array can be measured in series. The scattering of the JJ parameters was investigated at 5 K and resulted in a spread in $I$c of about 60% and in $R$n of 25%. However, a couple of subarrays with a spread lower than 10% could be found. In addition, these JJ subarrays were irradiated with high-frequency radiation in the GHz and THz range at a temperature of 20 K and synchronization of up to three JJs was observed in both frequency ranges.",
keywords = "He-FIB, HTS, JJ array, Josephson junction (JJ), Shapiro step, THz, YBaCuO",
author = "Max Pr{\"o}pper and Dominik Hanisch and Christoph Schmid and Marius Neumann and Ritter, {Paul Julius} and Tucholke, {Marc Andr{\'e}} and Edward Goldobin and Dieter Koelle and Reinhold Kleiner and Meinhard Schilling and Benedikt Hampel",
note = "Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",
year = "2024",
month = dec,
day = "12",
doi = "10.1109/TASC.2024.3516741",
language = "English",

}

Download

TY - JOUR

T1 - High-Tc Josephson Junction Arrays Fabricated by He-FIB

AU - Pröpper, Max

AU - Hanisch, Dominik

AU - Schmid, Christoph

AU - Neumann, Marius

AU - Ritter, Paul Julius

AU - Tucholke, Marc André

AU - Goldobin, Edward

AU - Koelle, Dieter

AU - Kleiner, Reinhold

AU - Schilling, Meinhard

AU - Hampel, Benedikt

N1 - Publisher Copyright: © 2002-2011 IEEE.

PY - 2024/12/12

Y1 - 2024/12/12

N2 - The development of a fabrication process for Josephson junctions (JJs) using a direct-write helium-focused ion beam (He-FIB) technique provides the opportunity to control parameters such as the critical current $I$c and normal-state resistance $R$n of individual JJs in YBa2Cu3O7-xJJ arrays. Such arrays could be used as a voltage calibration standard that is operated at higher temperatures and higher driving frequencies than the currently used niobium JJ arrays. This study presents the fabrication process of 79 YBa2Cu3O7-xJJs in a meander array design using a direct writing He-FIB process with the same irradiation dose for all JJs. In this design, each of the JJs can be measured individually, and adjacent JJs that exhibit similar and suitable parameters for a voltage standard array can be measured in series. The scattering of the JJ parameters was investigated at 5 K and resulted in a spread in $I$c of about 60% and in $R$n of 25%. However, a couple of subarrays with a spread lower than 10% could be found. In addition, these JJ subarrays were irradiated with high-frequency radiation in the GHz and THz range at a temperature of 20 K and synchronization of up to three JJs was observed in both frequency ranges.

AB - The development of a fabrication process for Josephson junctions (JJs) using a direct-write helium-focused ion beam (He-FIB) technique provides the opportunity to control parameters such as the critical current $I$c and normal-state resistance $R$n of individual JJs in YBa2Cu3O7-xJJ arrays. Such arrays could be used as a voltage calibration standard that is operated at higher temperatures and higher driving frequencies than the currently used niobium JJ arrays. This study presents the fabrication process of 79 YBa2Cu3O7-xJJs in a meander array design using a direct writing He-FIB process with the same irradiation dose for all JJs. In this design, each of the JJs can be measured individually, and adjacent JJs that exhibit similar and suitable parameters for a voltage standard array can be measured in series. The scattering of the JJ parameters was investigated at 5 K and resulted in a spread in $I$c of about 60% and in $R$n of 25%. However, a couple of subarrays with a spread lower than 10% could be found. In addition, these JJ subarrays were irradiated with high-frequency radiation in the GHz and THz range at a temperature of 20 K and synchronization of up to three JJs was observed in both frequency ranges.

KW - He-FIB

KW - HTS

KW - JJ array

KW - Josephson junction (JJ)

KW - Shapiro step

KW - THz

KW - YBaCuO

UR - http://www.scopus.com/inward/record.url?scp=85212556285&partnerID=8YFLogxK

U2 - 10.1109/TASC.2024.3516741

DO - 10.1109/TASC.2024.3516741

M3 - Article

AN - SCOPUS:85212556285

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

ER -