Relaxation oscillation SQUIDs with high δV/δΦ

D.J. Adelerhof, H. Nijstad, J. Flokstra, H. Rogalla

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)
27 Downloads (Pure)

Abstract

Relaxation oscillation SQUIDs (ROSs) based on Nb/Al, AlOx/Al/Nb Josephson tunnel junctions have been designed and fabricated. The hysteretic SQUIDs (superconducting quantum interference devices) have a maximum critical current of about 130 μA and an inductance of 20 pH. A voltage modulation of 40 μV and a flux to voltage transfer δV/δΦ of 4 MV/Φ0 have been measured in these SQUIDs. Double relaxation oscillation SQUIDs (DROSs), which are based on two hysteretic SQUIDs, showed transfer coefficients up to 77 mV/Φ0. The intrinsic white flux noise of the DROSs is smaller than 3-5 μΦ0/√Hz. It is noted that the results are very promising for a next generation of SQUID systems with simplified read-out.
Original languageEnglish
Pages (from-to)1862-1865
Number of pages4
JournalIEEE transactions on applied superconductivity
Volume3
Issue number1
DOIs
Publication statusPublished - 1993
Event1992 Applied Superconductivity Conference, ASC 1992 - Chicago, United States
Duration: 23 Aug 199228 Aug 1992

Fingerprint

SQUIDs
interference
oscillations
Fluxes
electric potential
Tunnel junctions
Critical currents
inductance
tunnel junctions
Electric potential
critical current
Inductance
modulation
Modulation
coefficients

Cite this

Adelerhof, D.J. ; Nijstad, H. ; Flokstra, J. ; Rogalla, H. / Relaxation oscillation SQUIDs with high δV/δΦ. In: IEEE transactions on applied superconductivity. 1993 ; Vol. 3, No. 1. pp. 1862-1865.
@article{eb26a5ead57f496e86161a77a4c22382,
title = "Relaxation oscillation SQUIDs with high δV/δΦ",
abstract = "Relaxation oscillation SQUIDs (ROSs) based on Nb/Al, AlOx/Al/Nb Josephson tunnel junctions have been designed and fabricated. The hysteretic SQUIDs (superconducting quantum interference devices) have a maximum critical current of about 130 μA and an inductance of 20 pH. A voltage modulation of 40 μV and a flux to voltage transfer δV/δΦ of 4 MV/Φ0 have been measured in these SQUIDs. Double relaxation oscillation SQUIDs (DROSs), which are based on two hysteretic SQUIDs, showed transfer coefficients up to 77 mV/Φ0. The intrinsic white flux noise of the DROSs is smaller than 3-5 μΦ0/√Hz. It is noted that the results are very promising for a next generation of SQUID systems with simplified read-out.",
author = "D.J. Adelerhof and H. Nijstad and J. Flokstra and H. Rogalla",
year = "1993",
doi = "10.1109/77.233318",
language = "English",
volume = "3",
pages = "1862--1865",
journal = "IEEE transactions on applied superconductivity",
issn = "1051-8223",
publisher = "IEEE",
number = "1",

}

Relaxation oscillation SQUIDs with high δV/δΦ. / Adelerhof, D.J.; Nijstad, H.; Flokstra, J.; Rogalla, H.

In: IEEE transactions on applied superconductivity, Vol. 3, No. 1, 1993, p. 1862-1865.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Relaxation oscillation SQUIDs with high δV/δΦ

AU - Adelerhof, D.J.

AU - Nijstad, H.

AU - Flokstra, J.

AU - Rogalla, H.

PY - 1993

Y1 - 1993

N2 - Relaxation oscillation SQUIDs (ROSs) based on Nb/Al, AlOx/Al/Nb Josephson tunnel junctions have been designed and fabricated. The hysteretic SQUIDs (superconducting quantum interference devices) have a maximum critical current of about 130 μA and an inductance of 20 pH. A voltage modulation of 40 μV and a flux to voltage transfer δV/δΦ of 4 MV/Φ0 have been measured in these SQUIDs. Double relaxation oscillation SQUIDs (DROSs), which are based on two hysteretic SQUIDs, showed transfer coefficients up to 77 mV/Φ0. The intrinsic white flux noise of the DROSs is smaller than 3-5 μΦ0/√Hz. It is noted that the results are very promising for a next generation of SQUID systems with simplified read-out.

AB - Relaxation oscillation SQUIDs (ROSs) based on Nb/Al, AlOx/Al/Nb Josephson tunnel junctions have been designed and fabricated. The hysteretic SQUIDs (superconducting quantum interference devices) have a maximum critical current of about 130 μA and an inductance of 20 pH. A voltage modulation of 40 μV and a flux to voltage transfer δV/δΦ of 4 MV/Φ0 have been measured in these SQUIDs. Double relaxation oscillation SQUIDs (DROSs), which are based on two hysteretic SQUIDs, showed transfer coefficients up to 77 mV/Φ0. The intrinsic white flux noise of the DROSs is smaller than 3-5 μΦ0/√Hz. It is noted that the results are very promising for a next generation of SQUID systems with simplified read-out.

U2 - 10.1109/77.233318

DO - 10.1109/77.233318

M3 - Article

VL - 3

SP - 1862

EP - 1865

JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

SN - 1051-8223

IS - 1

ER -