Presentation 1998/11/16
Noise Properties of High T_c SQUID Fabricated with Bicrystal Junctions
Tadashi Minotani, Fumio Shiraishi, Atsushi Kandori, Keiji Enpuku,
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Abstract(in English) Properties of high T_c SQUID utilizing bicrystal junction are studied. First, transport mechanism in the bicrystal junction is studied from the dependence of junction parameters on the misorientation angle of the bicrystal substrate. Next, properties of the SQUID made with the 30 degree junctions are quantitatively compared with the simulation results. Good agreement is obtained on the voltage modulation depth, while the measured flux noise is about 2 or 3 times higher compared with the simulation result. The reason for the large noise is discussed from the point of junction quality. The critical current fluctuation of the junction is also estimated from the 1/f flux noise, and its dependence on the junction parameters, such as critical current and resistance, is studied.
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Keyword(in English) High T_c SQUID / 30-degree bicrystal junction / flux noise / 1/f noise
Paper # SCE98-28
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Committee SCE
Conference Date 1998/11/16(1days)
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Registration To Superconductive Electronics (SCE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Noise Properties of High T_c SQUID Fabricated with Bicrystal Junctions
Sub Title (in English)
Keyword(1) High T_c SQUID
Keyword(2) 30-degree bicrystal junction
Keyword(3) flux noise
Keyword(4) 1/f noise
1st Author's Name Tadashi Minotani
1st Author's Affiliation Department of Electronic Device Engineering, ISEE, Kyushu University()
2nd Author's Name Fumio Shiraishi
2nd Author's Affiliation Department of Electronic Device Engineering, ISEE, Kyushu University
3rd Author's Name Atsushi Kandori
3rd Author's Affiliation Department of Electronic Device Engineering, ISEE, Kyushu University
4th Author's Name Keiji Enpuku
4th Author's Affiliation Department of Electronic Device Engineering, ISEE, Kyushu University
Date 1998/11/16
Paper # SCE98-28
Volume (vol) vol.98
Number (no) 399
Page pp.pp.-
#Pages 6
Date of Issue