Presentation 2010-10-19
The Effect of NbN or MgB_2 Ground Planes on Magnetic Flux Trapping
Naoki MITAMURA, Naoto NAITO, Hiroyuki AKAIKE, Akira FUJIMAKI, Yoshihiro NIIHARA, Michio NAITO,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We have investigated the effect on magnetic flux trapping by moats formed in NbN and MgB_2 ground planes. The effect was evaluated by measuring flux trapping in series arrays of 1000 Josephson junctions fabricated on Nb, NbN and MgB_2 ground planes. In this evaluation, flux trapping in the junctions on NbN ground planes was almost not observed in the perpendicular magnetic field range of -1.8μT to 1.4μT. Since this range was approximately twice as wide as the range in junctions on Nb grand planes, the moats formed in NbN ground planes were effective for excluding magnetic flux compared with Nb ground planes. MgB_2 ground planes also encourage excluding magnetic flux by investigation of flux trapping in the range of 5 to 20μT.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Single flux quantum circuit / Josephson junction / Magnetic flux trapping / NbN / MgB_2
Paper # SCE2010-28
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Conference Information
Committee SCE
Conference Date 2010/10/12(1days)
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Paper Information
Registration To Superconductive Electronics (SCE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) The Effect of NbN or MgB_2 Ground Planes on Magnetic Flux Trapping
Sub Title (in English)
Keyword(1) Single flux quantum circuit
Keyword(2) Josephson junction
Keyword(3) Magnetic flux trapping
Keyword(4) NbN
Keyword(5) MgB_2
1st Author's Name Naoki MITAMURA
1st Author's Affiliation Nagoya University()
2nd Author's Name Naoto NAITO
2nd Author's Affiliation Nagoya University
3rd Author's Name Hiroyuki AKAIKE
3rd Author's Affiliation Nagoya University
4th Author's Name Akira FUJIMAKI
4th Author's Affiliation Nagoya University
5th Author's Name Yoshihiro NIIHARA
5th Author's Affiliation Tokyo University of Agriculture and Technology
6th Author's Name Michio NAITO
6th Author's Affiliation Tokyo University of Agriculture and Technology
Date 2010-10-19
Paper # SCE2010-28
Volume (vol) vol.110
Number (no) 235
Page pp.pp.-
#Pages 6
Date of Issue