Characterization of dual high transition temperature superconducting quantum interference device first-order planar gradiometers on a chip

Kuen Lin Chen; Hong Chang Yang; P. C. Ko; H. E. Horng

doi:10.1063/1.3481449

Characterization of dual high transition temperature superconducting quantum interference device first-order planar gradiometers on a chip

Kuen Lin Chen^*, Hong Chang Yang, P. C. Ko, H. E. Horng

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The dual first-order planar gradiometers of high transition temperature (high- T_c) superconducting quantum interference devices (SQUIDs) were designed and fabricated on a 10×10 mm² SrTiO₃ bicrystal substrate. Each gradiometer consists of four bare SQUIDs which are connected to two symmetric pickup loops. Any two of the SQUIDs can be connected in series to obtain better performance. In this study, by selecting the coupling direction of SQUID, a balance resolution of 0.08% was achieved. And, a second-order electronic planar gradiometer was composed of these two first-order gradiometers. Experimental data showed that the noise performance of the second-order electronic planar gradiometer composed of two planar first-order gradiometers can reach 15 μ ₀ / Hz^1/2 at 1 kHz in an unshielded environment, which is comparable to the noise level of a magnetometer in a shielded environment.

Original language	English
Article number	064503
Journal	Journal of Applied Physics
Volume	108
Issue number	6
DOIs	https://doi.org/10.1063/1.3481449
Publication status	Published - 2010 Sept 15

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Characterization of dual high transition temperature superconducting quantum interference device first-order planar gradiometers on a chip",

abstract = "The dual first-order planar gradiometers of high transition temperature (high- Tc) superconducting quantum interference devices (SQUIDs) were designed and fabricated on a 10×10 mm2 SrTiO3 bicrystal substrate. Each gradiometer consists of four bare SQUIDs which are connected to two symmetric pickup loops. Any two of the SQUIDs can be connected in series to obtain better performance. In this study, by selecting the coupling direction of SQUID, a balance resolution of 0.08% was achieved. And, a second-order electronic planar gradiometer was composed of these two first-order gradiometers. Experimental data showed that the noise performance of the second-order electronic planar gradiometer composed of two planar first-order gradiometers can reach 15 μ 0 / Hz1/2 at 1 kHz in an unshielded environment, which is comparable to the noise level of a magnetometer in a shielded environment.",

author = "Chen, {Kuen Lin} and Yang, {Hong Chang} and Ko, {P. C.} and Horng, {H. E.}",

note = "Funding Information: The authors are grateful for the financial support from National Science Council of Taiwan under Grant No. NSC98-2752-M-002-003-PAE.",

year = "2010",

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doi = "10.1063/1.3481449",

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AU - Chen, Kuen Lin

AU - Yang, Hong Chang

AU - Ko, P. C.

AU - Horng, H. E.

N1 - Funding Information: The authors are grateful for the financial support from National Science Council of Taiwan under Grant No. NSC98-2752-M-002-003-PAE.

PY - 2010/9/15

Y1 - 2010/9/15

N2 - The dual first-order planar gradiometers of high transition temperature (high- Tc) superconducting quantum interference devices (SQUIDs) were designed and fabricated on a 10×10 mm2 SrTiO3 bicrystal substrate. Each gradiometer consists of four bare SQUIDs which are connected to two symmetric pickup loops. Any two of the SQUIDs can be connected in series to obtain better performance. In this study, by selecting the coupling direction of SQUID, a balance resolution of 0.08% was achieved. And, a second-order electronic planar gradiometer was composed of these two first-order gradiometers. Experimental data showed that the noise performance of the second-order electronic planar gradiometer composed of two planar first-order gradiometers can reach 15 μ 0 / Hz1/2 at 1 kHz in an unshielded environment, which is comparable to the noise level of a magnetometer in a shielded environment.

AB - The dual first-order planar gradiometers of high transition temperature (high- Tc) superconducting quantum interference devices (SQUIDs) were designed and fabricated on a 10×10 mm2 SrTiO3 bicrystal substrate. Each gradiometer consists of four bare SQUIDs which are connected to two symmetric pickup loops. Any two of the SQUIDs can be connected in series to obtain better performance. In this study, by selecting the coupling direction of SQUID, a balance resolution of 0.08% was achieved. And, a second-order electronic planar gradiometer was composed of these two first-order gradiometers. Experimental data showed that the noise performance of the second-order electronic planar gradiometer composed of two planar first-order gradiometers can reach 15 μ 0 / Hz1/2 at 1 kHz in an unshielded environment, which is comparable to the noise level of a magnetometer in a shielded environment.

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Characterization of dual high transition temperature superconducting quantum interference device first-order planar gradiometers on a chip

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