Presentation 2005/2/2
Numerical analysis of a SQUID model for high-T_c Josephson junctions coupled with RF magnetic signals
Yoshinao MIZUGAKI, Jian CHEN,
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Abstract(in English) Numerically-simulated properties of an RF-field-driven SQUID (superconducting quantum interference device) model are presented. In the model, an RF signal is coupled with the SQUID loop magnetically. By comparison with the results of the conventional RF-current-driven junction model in literature, simulated RF responses of the RF-field-driven SQUID model exhibit enhanced nonlinearity (e.g., larger Shapiro steps) for a wider frequency range. Two anomalous experimental results of YBa_2Cu_3O_<7-δ> grain boundary Josephson junctions are numerically reproduced by using the RF-field-driven SQUID model. The one is the magnetically-enhanced Shapiro steps under THz signal irradiation, and the other is the step-like-structure under GHz signal irradiation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Josephson junction / Shapiro Step / SQUID / microwave / terahertz signal / YBCO / simulation
Paper # SCE2004-32
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Conference Information
Committee SCE
Conference Date 2005/2/2(1days)
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Registration To Superconductive Electronics (SCE)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Numerical analysis of a SQUID model for high-T_c Josephson junctions coupled with RF magnetic signals
Sub Title (in English)
Keyword(1) Josephson junction
Keyword(2) Shapiro Step
Keyword(3) SQUID
Keyword(4) microwave
Keyword(5) terahertz signal
Keyword(6) YBCO
Keyword(7) simulation
1st Author's Name Yoshinao MIZUGAKI
1st Author's Affiliation Department of Electronic Engineering, The University of Electro-Communications()
2nd Author's Name Jian CHEN
2nd Author's Affiliation Research Institute of Superconductor Electronics (RISE), Department of Electronic Science & Engineering, Nanjing University
Date 2005/2/2
Paper # SCE2004-32
Volume (vol) vol.104
Number (no) 654
Page pp.pp.-
#Pages 6
Date of Issue