Direct-coupled high Tc DC superconducting quantum interference device magnetometers on SrTiO3 substrate

Theoretical description and comparison with experiment

Keiji Enpuku, Tadashi Minotani, Atushi Kandori, Fumio Shiraishi, Joern Beyer, Dietmar Drung, Frank Ludwig

研究成果: ジャーナルへの寄稿評論記事

9 引用 (Scopus)

抄録

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.

元の言語英語
ページ(範囲)4769-4773
ページ数5
ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
37
発行部数9 A
出版物ステータス出版済み - 9 1 1998

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SQUIDs
Magnetometers
magnetometers
direct current
interference
Substrates
Electric potential
Experiments
Fluxes
Strip telecommunication lines
electric potential
Bicrystals
Pickups
Inductance
bicrystals
Permittivity
resonance lines
inductance
layouts
Modulation

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

これを引用

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.

:: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 巻 37, 番号 9 A, 01.09.1998, p. 4769-4773.

研究成果: ジャーナルへの寄稿評論記事

Enpuku, Keiji ; Minotani, Tadashi ; Kandori, Atushi ; Shiraishi, Fumio ; Beyer, Joern ; Drung, Dietmar ; Ludwig, Frank. / Direct-coupled high Tc DC superconducting quantum interference device magnetometers on SrTiO3 substrate : Theoretical description and comparison with experiment. :: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 1998 ; 巻 37, 番号 9 A. pp. 4769-4773.
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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.",
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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

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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.

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