Effects of magnetic field on two-dimensional superconducting quantum interference filters

Oppenlaender, J.; Caputo, P.; Haeussler, Ch.; Traeuble, T.; Tomes, J.; Friesch, A.; Schopohl, N.

doi:10.1063/1.1597753

Cited by 22 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dip is quite symmetric, and its width is about , and the maximum transfer factor is about . The symmetric upwards bending of the curves correspond to the magnetic field penetration in the Josephson junctions, with the Fraunhofer-like dependence [10]. The on-chip superconducting pick-up loop enhances the SQIF magnetic field sensitivity of about 10 times with respect to the bare SQIF of the same geometry without the pick-up loop.…”

Section: A the Curvesmentioning

confidence: 97%

“…SQIFs are arrays of Josephson junctions (JJs) with a specially selected distribution of the loop areas, such that the magnetic field dependent voltage response is a delta-like dip in the vicinity of zero magnetic field. The amplitude of the dip increases with the number of loops connected in series [10]. The uniqueness of the dip and the high transfer factor (gain) make the SQIFs attractive as absolute magnetic field sensors, even in unshielded environments, or as broad band amplifiers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Superconducting Quantum Interference Filters as Absolute Magnetic Field Sensors

Caputo

Tomes

Oppenländer

et al. 2005

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

We propose Superconducting Quantum Interference Filters (SQIFs) as high sensitive magnetic field detectors. The SQIF is made of high critical temperature grain boundary Josephson junctions, and it is surrounded by an on chip superconducting pick-up loop which enhances the magnetic field sensitivity of about 10 times with respect to the same SQIF without pick-up loop. The devices are operated in Stirling microcoolers, at a temperature of about 70 K. In the presence of an applied magnetic field , SQIFs show the typical magnetic field dependent voltage response ( ), which is sharp delta-like dip in the vicinity of zero magnetic field. When the SQIF is cooled with magnetic shield, and then the shield is removed, the presence of the ambient magnetic field induces a shift of the dip position from 0 0 to a value 1 , which is about the average value of the Earth magnetic field, at our latitude. The low hysteresis observed in the sequence of experiments makes SQIFs suitable for high precision measurements of the absolute magnetic field. Typical magnetic flux noise spectra of SQIFs show a white noise level of about 0.6 T Hz. Comparative measurements of the direct spectra with the spectra measured by using noise reduction techniques reveal a significant decrease of the 1 noise levels. The experimental results are discussed in view of potential applications of high critical temperature SQIFs in magnetometry.

show abstract

Section: A the Curvesmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Superconducting Quantum Interference Filters as Absolute Magnetic Field Sensors

Caputo

Tomes

Oppenländer

et al. 2005

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The interest of SQIFs as compared to regular SQUIDs arrays lies in the single valued response to external magnetic field. It makes possible the realisation of highly sensitive absolute value magneto-sensors [10][11][12][13], and opens the route to high frequency compact detectors and Low Noise Amplifiers (LNA [14], and proposed advanced SQIFs architectures for microwave applications in general [15]. Wide-band microwave LNA with a power gain of 20 dB from 8 to 11 GHz [16], antennas in the near field [17] at 9 GHz and active electrically antennas [18] are being developed.…”

Section: Introductionmentioning

confidence: 99%

Static and radio frequency magnetic response of high T _c superconducting quantum interference filters made by ion irradiation

Pawlowski¹,

Kermorvant²,

Crété³

et al. 2018

Supercond. Sci. Technol.

View full text Add to dashboard Cite

Superconducting Quantum Interference Filters (SQIF) are promising devices for Radio-Frequency (RF) detection combining low noise, high sensitivity, large dynamic range and wide-band capabilities. Impressive progress have been made recently in the field, with SQIF based antennas and amplifiers showing interesting properties in the GHz range using the well-established Nb/AlOx technology. The possibility to extend these results to High Temperature Superconductors (HTS) is still open, and different techniques to fabricate HTS SQIFs are competing to make RF devices.We report on the DC and RF response of a High Temperature SQIF fabricated by the ion irradiation technique. It is made of 1000 Superconducting QUantum Interference Devices (SQUIDs) in series, with loop areas randomly distributed between 6 µm 2 and 60 µm 2 . The DC transfer factor is ∼ 450 V T −1 at optimal bias and temperature, and the maximum voltage swing ∼ 2.5 mV . We show that such a SQIF detects RF signals up to 150 MHz. It presents linear characteristics for RF power spanning more than five decades, and non-linearities develop beyond P RF = −35 dBm in our set-up configuration. Second-harmonic generation has been shown to be minimum at the functioning point in the whole range of frequencies. A model has been developed which captures the essential features of the SQIF RF response.

show abstract

“…Furthermore, recent achievements in nanotechnology allow the fabrication of parallel-coupled one-dimensional ͑1D͒ Josephson junction chains 7,8 ͓Fig. 1͑a͔͒, known as discrete Josephson transmission lines, and artificial superconducting multilayers 9 ͓Fig.…”

Section: Introductionmentioning

confidence: 99%

Controlled terahertz frequency response and transparency of Josephson chains and superconducting multilayers

et al. 2007

View full text Add to dashboard Cite

A fundamental property of wave propagation is Anderson localization, which affects the transfer of information, energy, mass, and charge in disordered media. This localization can manifest itself via, e.g., the metal-insulator transition. We exactly map the behavior of a quantum particle moving in a potential with correlated disorder to the sub-terahertz wave propagation in either Josephson chains or superconducting multilayers. When the Josephson junction parameters vary randomly, the sub-THz electromagnetic waves cannot propagate through these Josephson structures due to localization. For parameter variations with long-range correlations, we predict sharp transitions from transparent to reflective frequency regions for Josephson plasma waves. With appropriate choices of the correlation function, frequency windows with targeted or designed transparencies for THz or sub-THz electromagnetic waves could be achieved. This could be useful for tailoring the electromagnetic wave spectrum of Josephson arrays within the THz frequency range, which is important for applications in physics, astronomy, chemistry, biology, and medicine.

show abstract

Effects of magnetic field on two-dimensional superconducting quantum interference filters

Abstract: High-performance magnetic field sensor based on superconducting quantum interference filters Appl. Phys. Lett. 85, 1389 (2004); 10.1063/1.1787165Nonperiodic flux to voltage conversion of series arrays of dc superconducting quantum interference devices

Cited by 22 publications

References 12 publications

Superconducting Quantum Interference Filters as Absolute Magnetic Field Sensors

Superconducting Quantum Interference Filters as Absolute Magnetic Field Sensors

Static and radio frequency magnetic response of high T _c superconducting quantum interference filters made by ion irradiation

Controlled terahertz frequency response and transparency of Josephson chains and superconducting multilayers

Contact Info

Product

Resources

About

Effects of magnetic field on two-dimensional superconducting quantum interference filters

Abstract: High-performance magnetic field sensor based on superconducting quantum interference filters Appl. Phys. Lett. 85, 1389 (2004); 10.1063/1.1787165Nonperiodic flux to voltage conversion of series arrays of dc superconducting quantum interference devices

Cited by 22 publications

References 12 publications

Superconducting Quantum Interference Filters as Absolute Magnetic Field Sensors

Superconducting Quantum Interference Filters as Absolute Magnetic Field Sensors

Static and radio frequency magnetic response of high T c superconducting quantum interference filters made by ion irradiation

Controlled terahertz frequency response and transparency of Josephson chains and superconducting multilayers

Contact Info

Product

Resources

About

Static and radio frequency magnetic response of high T _c superconducting quantum interference filters made by ion irradiation