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Paper Abstract and Keywords
Presentation 2010-02-22 16:30
Observation of enhanced MR effects in a single electron transistor with ferromagnetic lead electrodes
Nobuyuki Tamura, Kento Kikuchi, Masataka Moriya, Tadayuki Kobayashi, Hiroshi Shimada, Yoshinao Mizugaki (Univ. of Electro-Comm.) ED2009-204 SDM2009-201 Link to ES Tech. Rep. Archives: ED2009-204 SDM2009-201
Abstract (in Japanese) (See Japanese page) 
(in English) We report our experimental results on the magneto-resistance ratio ($MRR$) of single-electron
transistors (SETs)
with ferromagnetic (FM) lead electrodes. We fabricated two types of SETs: one
has a nomal metal (NM) island, and the other has a superconductor (SC)
island. We measured their $MRR$. The $MRR$ of the FM/NM/FM-SET was in range
of a theoretical prediction. On the other hand, the $MRR$ of the
FM/SC/FM-SET was beyond the theoritcal value. Besides, the enhanced $MRR$
effects were observed in these SETs. The enhanced $MRR$ is a phenomenon
that the $MRR$ in the SET-OFF state is enhanced more than that in the
SET-ON state. We calculated a theoretical model including cotunneling
processes and suceeded to reproduce the experimental $MRR$ values.
Keyword (in Japanese) (See Japanese page) 
(in English) ferromagnet / superconductor / Coulomb blockade / single-electron transistor / magneto-resistance ratio / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 422, ED2009-204, pp. 47-52, Feb. 2010.
Paper # ED2009-204 
Date of Issue 2010-02-15 (ED, SDM) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
and
reproduction
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 ED2009-204 SDM2009-201 Link to ES Tech. Rep. Archives: ED2009-204 SDM2009-201

Conference Information
Committee ED SDM  
Conference Date 2010-02-22 - 2010-02-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawaken-Seinen-Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Functional Nano Device and Related Technology 
Paper Information
Registration To ED 
Conference Code 2010-02-ED-SDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Observation of enhanced MR effects in a single electron transistor with ferromagnetic lead electrodes 
Sub Title (in English)  
Keyword(1) ferromagnet  
Keyword(2) superconductor  
Keyword(3) Coulomb blockade  
Keyword(4) single-electron transistor  
Keyword(5) magneto-resistance ratio  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Nobuyuki Tamura  
1st Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
2nd Author's Name Kento Kikuchi  
2nd Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
3rd Author's Name Masataka Moriya  
3rd Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
4th Author's Name Tadayuki Kobayashi  
4th Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
5th Author's Name Hiroshi Shimada  
5th Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
6th Author's Name Yoshinao Mizugaki  
6th Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
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Speaker
Date Time 2010-02-22 16:30:00 
Presentation Time 25 
Registration for ED 
Paper # ED2009-204, SDM2009-201 
Volume (vol) 109 
Number (no) no.422(ED), no.423(SDM) 
Page pp.47-52 
#Pages
Date of Issue 2010-02-15 (ED, SDM) 


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