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Paper Abstract and Keywords
Presentation 2020-11-26 10:20
Fabrication of NbN based ferromagnetic Josephson junction with PdNi barrier layer
Riku Sugimoto, Hayate Nakamura, Duong Pham, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki (Nagoya Univ.) SCE2020-14 Link to ES Tech. Rep. Archives: SCE2020-14
Abstract (in Japanese) (See Japanese page) 
(in English) We develop ferromagnetic Josephson junctions to realize the flux-bias-free superconducting flux quantum bit (qubit) with the ferromagnetic π junction which has an advantage for large-scale superconducting quantum circuits. As NbN-based ferromagnetic Josephson junction suitable for the qubit applications, NbN/CuNi/NbN ferromagnetic π junctions have been reported so far. In the junctions with CuNi barrier, however, inhomogeneous Ni clusters in the CuNi film has been reported. In this work, we fabricated the NbN-based Josephson junctions with ferromagnetic PdNi barriers in which the better in-plane magnetic uniformity is expected and evaluated their characterisitcs.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum bit / Ferromagnetic Josephson junction / π-junction / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 251, SCE2020-14, pp. 29-33, Nov. 2020.
Paper # SCE2020-14 
Date of Issue 2020-11-18 (SCE) 
ISSN Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SCE2020-14 Link to ES Tech. Rep. Archives: SCE2020-14

Conference Information
Committee SCE  
Conference Date 2020-11-25 - 2020-11-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SCE 
Conference Code 2020-11-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fabrication of NbN based ferromagnetic Josephson junction with PdNi barrier layer 
Sub Title (in English)  
Keyword(1) Quantum bit  
Keyword(2) Ferromagnetic Josephson junction  
Keyword(3) π-junction  
1st Author's Name Riku Sugimoto  
1st Author's Affiliation Nagoya University (Nagoya Univ.)
2nd Author's Name Hayate Nakamura  
2nd Author's Affiliation Nagoya University (Nagoya Univ.)
3rd Author's Name Duong Pham  
3rd Author's Affiliation Nagoya University (Nagoya Univ.)
4th Author's Name Masamitsu Tanaka  
4th Author's Affiliation Nagoya University (Nagoya Univ.)
5th Author's Name Taro Yamashita  
5th Author's Affiliation Nagoya University (Nagoya Univ.)
6th Author's Name Akira Fujimaki  
6th Author's Affiliation Nagoya University (Nagoya Univ.)
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Speaker Author-1 
Date Time 2020-11-26 10:20:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2020-14 
Volume (vol) vol.120 
Number (no) no.251 
Page pp.29-33 
Date of Issue 2020-11-18 (SCE) 

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