Tunable high transition temperature superconducting quantum interference device magnetometer with gate-voltage-controlled bicrystal junctions

Kuen Lin Chen; U. C. Sou; J. C. Chen; H. C. Yang; J. T. Jeng; P. C. Ko; H. E. Horng; C. H. Wu; J. H. Chen

doi:10.1063/1.3182240

Tunable high transition temperature superconducting quantum interference device magnetometer with gate-voltage-controlled bicrystal junctions

Kuen Lin Chen, U. C. Sou, J. C. Chen, H. C. Yang, J. T. Jeng, P. C. Ko, H. E. Horng, C. H. Wu, J. H. Chen

Undergraduate Program of Electro-Optical Engineering

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

Abstract

A gate-voltage-controlled high transition temperature direct current superconducting quantum interference device (high- T_c dc SQUID) magnetometer was fabricated to study how the electric field effect affects the device's voltage-flux and voltage-current characteristics. The magnetometer consists of a monolithic YBa₂ Cu₃ O_7-δ superconducting film and bicrystal junctions covered by a polymethylmethacrylate film as the gate insulator. It was found that the magnetic flux modulated voltage swing of the SQUID magnetometer varies by 48% when the gate voltage is changed from -1.9 to 9.5 V. The variation in voltage swing is attributed to the change of effective capacitance in grain-boundary junctions.

Original language	English
Article number	033504
Journal	Applied Physics Letters
Volume	95
Issue number	3
DOIs	https://doi.org/10.1063/1.3182240
Publication status	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3182240

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title = "Tunable high transition temperature superconducting quantum interference device magnetometer with gate-voltage-controlled bicrystal junctions",

abstract = "A gate-voltage-controlled high transition temperature direct current superconducting quantum interference device (high- Tc dc SQUID) magnetometer was fabricated to study how the electric field effect affects the device's voltage-flux and voltage-current characteristics. The magnetometer consists of a monolithic YBa2 Cu3 O7-δ superconducting film and bicrystal junctions covered by a polymethylmethacrylate film as the gate insulator. It was found that the magnetic flux modulated voltage swing of the SQUID magnetometer varies by 48% when the gate voltage is changed from -1.9 to 9.5 V. The variation in voltage swing is attributed to the change of effective capacitance in grain-boundary junctions.",

author = "Chen, {Kuen Lin} and Sou, {U. C.} and Chen, {J. C.} and Yang, {H. C.} and Jeng, {J. T.} and Ko, {P. C.} and Horng, {H. E.} and Wu, {C. H.} and Chen, {J. H.}",

note = "Funding Information: The authors are grateful for the financial support from National Science Council of Taiwan under Grant No. NSC97-2752-M-002-009-PAE.",

year = "2009",

doi = "10.1063/1.3182240",

language = "English",

volume = "95",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics Publising LLC",

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T1 - Tunable high transition temperature superconducting quantum interference device magnetometer with gate-voltage-controlled bicrystal junctions

AU - Chen, Kuen Lin

AU - Sou, U. C.

AU - Chen, J. C.

AU - Yang, H. C.

AU - Jeng, J. T.

AU - Ko, P. C.

AU - Horng, H. E.

AU - Wu, C. H.

AU - Chen, J. H.

N1 - Funding Information: The authors are grateful for the financial support from National Science Council of Taiwan under Grant No. NSC97-2752-M-002-009-PAE.

PY - 2009

Y1 - 2009

N2 - A gate-voltage-controlled high transition temperature direct current superconducting quantum interference device (high- Tc dc SQUID) magnetometer was fabricated to study how the electric field effect affects the device's voltage-flux and voltage-current characteristics. The magnetometer consists of a monolithic YBa2 Cu3 O7-δ superconducting film and bicrystal junctions covered by a polymethylmethacrylate film as the gate insulator. It was found that the magnetic flux modulated voltage swing of the SQUID magnetometer varies by 48% when the gate voltage is changed from -1.9 to 9.5 V. The variation in voltage swing is attributed to the change of effective capacitance in grain-boundary junctions.

AB - A gate-voltage-controlled high transition temperature direct current superconducting quantum interference device (high- Tc dc SQUID) magnetometer was fabricated to study how the electric field effect affects the device's voltage-flux and voltage-current characteristics. The magnetometer consists of a monolithic YBa2 Cu3 O7-δ superconducting film and bicrystal junctions covered by a polymethylmethacrylate film as the gate insulator. It was found that the magnetic flux modulated voltage swing of the SQUID magnetometer varies by 48% when the gate voltage is changed from -1.9 to 9.5 V. The variation in voltage swing is attributed to the change of effective capacitance in grain-boundary junctions.

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Tunable high transition temperature superconducting quantum interference device magnetometer with gate-voltage-controlled bicrystal junctions

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