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|標題:||Tunable high transition temperature superconducting quantum interference device magnetometer with gate-voltage-controlled bicrystal junctions||作者:||Chen, K.L.
|關鍵字:||bicrystals;electric field effects;grain boundaries;high-temperature;superconductors;polymer films;SQUID magnetometers;superconducting;thin films;interface||Project:||Applied Physics Letters||期刊/報告no：:||Applied Physics Letters, Volume 95, Issue 3.||摘要:||
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 YBa(2)Cu(3)O(7-delta) 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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