Presentation 1997/1/22
Technology on Protecting Josephson circuits from Magnetic Flux Trapping and Its Application for Josephson 4-Kbit RAMs
Shuichi Nagasawa, Hideaki Numata, Shuichi Tahara,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Moats are designed in different shapes and arranged in different patterns to determine how they affect the I-V characteristics of 1000 serially connected SQUID test circuits. Results show that surrounding the Josephson devices with narrow rectangular moats is very effective in preventing magnetic flux from being trapped, provided that the external magnetic flux within the moats is less than one flux quantum Φ_0. A 4-Kbit RAM, designed with these moats, is operated with an almost full bit yield of 99.8%, without any detrapping. This high bit yield is obtained even with a magnetic field as large as several milli-Gauss.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Magnetic Flux Trapping / Moat / Thermal Current / Josephson Memory / Superconductive IC
Paper # SCE96-30
Date of Issue

Conference Information
Committee SCE
Conference Date 1997/1/22(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) Technology on Protecting Josephson circuits from Magnetic Flux Trapping and Its Application for Josephson 4-Kbit RAMs
Sub Title (in English)
Keyword(1) Magnetic Flux Trapping
Keyword(2) Moat
Keyword(3) Thermal Current
Keyword(4) Josephson Memory
Keyword(5) Superconductive IC
1st Author's Name Shuichi Nagasawa
1st Author's Affiliation Fundamental Research Labs., NEC Corporation()
2nd Author's Name Hideaki Numata
2nd Author's Affiliation Fundamental Research Labs., NEC Corporation
3rd Author's Name Shuichi Tahara
3rd Author's Affiliation Fundamental Research Labs., NEC Corporation
Date 1997/1/22
Paper # SCE96-30
Volume (vol) vol.96
Number (no) 452
Page pp.pp.-
#Pages 6
Date of Issue