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

研究成果: 雜誌貢獻文章


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.

期刊Applied Physics Letters
出版狀態已發佈 - 2009 七月 31


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)