Abstract
A comprehensive quantitative comparison between the measured performance of direct-coupled high Tc superconducting quantum in interference device (SQUID) magnetometers with 30° bicrystal junctions and a numerical simulation is presented. It is shown that the characteristics of the SQUID magnetometer are considerably affected by resonances due to the large dielectric constant of the SrTiO3 substrate. In the realized magnetometer layout, the strip line resonance occurring in the SQUID inductance increases the voltage modulation depth and the output voltage noise of the SQUID, while the flux noise of the SQUID is nearly unchanged. It is also shown that the distortion of the voltage versus flux characteristic is caused by the LC resonance in the pickup loop of the magnetometer in combination with a capacitive feedback. Good agreement between experiment and simulation has been obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 4769-4773 |
| Number of pages | 5 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 37 |
| Issue number | 9 A |
| Publication status | Published - Sep 1 1998 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Direct-coupled high Tc DC superconducting quantum interference device magnetometers on SrTiO3 substrate : Theoretical description and comparison with experiment. / Enpuku, Keiji; Minotani, Tadashi; Kandori, Atushi; Shiraishi, Fumio; Beyer, Joern; Drung, Dietmar; Ludwig, Frank.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 37, No. 9 A, 01.09.1998, p. 4769-4773.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Direct-coupled high Tc DC superconducting quantum interference device magnetometers on SrTiO3 substrate
T2 - Theoretical description and comparison with experiment
AU - Enpuku, Keiji
AU - Minotani, Tadashi
AU - Kandori, Atushi
AU - Shiraishi, Fumio
AU - Beyer, Joern
AU - Drung, Dietmar
AU - Ludwig, Frank
PY - 1998/9/1
Y1 - 1998/9/1
N2 - A comprehensive quantitative comparison between the measured performance of direct-coupled high Tc superconducting quantum in interference device (SQUID) magnetometers with 30° bicrystal junctions and a numerical simulation is presented. It is shown that the characteristics of the SQUID magnetometer are considerably affected by resonances due to the large dielectric constant of the SrTiO3 substrate. In the realized magnetometer layout, the strip line resonance occurring in the SQUID inductance increases the voltage modulation depth and the output voltage noise of the SQUID, while the flux noise of the SQUID is nearly unchanged. It is also shown that the distortion of the voltage versus flux characteristic is caused by the LC resonance in the pickup loop of the magnetometer in combination with a capacitive feedback. Good agreement between experiment and simulation has been obtained.
AB - A comprehensive quantitative comparison between the measured performance of direct-coupled high Tc superconducting quantum in interference device (SQUID) magnetometers with 30° bicrystal junctions and a numerical simulation is presented. It is shown that the characteristics of the SQUID magnetometer are considerably affected by resonances due to the large dielectric constant of the SrTiO3 substrate. In the realized magnetometer layout, the strip line resonance occurring in the SQUID inductance increases the voltage modulation depth and the output voltage noise of the SQUID, while the flux noise of the SQUID is nearly unchanged. It is also shown that the distortion of the voltage versus flux characteristic is caused by the LC resonance in the pickup loop of the magnetometer in combination with a capacitive feedback. Good agreement between experiment and simulation has been obtained.
UR - http://www.scopus.com/inward/record.url?scp=0032154663&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032154663&partnerID=8YFLogxK
M3 - Review article
AN - SCOPUS:0032154663
VL - 37
SP - 4769
EP - 4773
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 9 A
ER -