Paper Abstract and Keywords |
Presentation |
2007-07-27 11:20
Microwave Response of Bi-2212 Long Intrinsic Josephson Junctions Takashi Tachiki, Takashi Uchida (N.D.A.) Link to ES Tech. Rep. Archives: SCE2007-14 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Microwave response properties of Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ long intrinsic Josephson junctions have been experimentally and theoretically investigated. We fabricated a mesa structure consisting of 14 junctions with 50 $mu$m long and 4 $mu$m wide, and observed the microwave-induced steps in the I-V characteristics of the mesa under the irradiation with microwaves in the range from 6.8 to 7.8 GHz. The step voltages were proportional to the square root of the microwave power. This implies that the steps are produced by the motion of fluxons created by the microwaves. The Josephson frequency corresponding to the maximum step voltage was estimated as 570 GHz. Moreover, the step voltage decreased with increasing temperature. This can be explained by the decrease of the Swihart velocity related to the Fiske resonance. A numerical simulation using the coupled sine-Gordon equations for long intrinsic junctions under microwave irradiation shows the relationship between the microwave-induced steps and plasma resonance. The simulation obtained the power dependence of the step voltage similar to the experimental result. These facts suggested that the observed steps were generated by the plasma resonance excited by the irradiated microwaves. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ / Intrinsic Josephson Junction / Microwave-induced step / Coupled sine-Gordon equations / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 171, SCE2007-14, pp. 13-17, July 2007. |
Paper # |
SCE2007-14 |
Date of Issue |
2007-07-20 (SCE) |
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) |
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Link to ES Tech. Rep. Archives: SCE2007-14 |
Conference Information |
Committee |
SCE |
Conference Date |
2007-07-27 - 2007-07-27 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kikai-Shinko-Kaikan Bldg. |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
SCE |
Conference Code |
2007-07-SCE |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Microwave Response of Bi-2212 Long Intrinsic Josephson Junctions |
Sub Title (in English) |
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Keyword(1) |
Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ |
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Intrinsic Josephson Junction |
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Microwave-induced step |
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Coupled sine-Gordon equations |
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1st Author's Name |
Takashi Tachiki |
1st Author's Affiliation |
National Defense Academy (N.D.A.) |
2nd Author's Name |
Takashi Uchida |
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National Defense Academy (N.D.A.) |
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Speaker |
Author-1 |
Date Time |
2007-07-27 11:20:00 |
Presentation Time |
25 minutes |
Registration for |
SCE |
Paper # |
SCE2007-14 |
Volume (vol) |
vol.107 |
Number (no) |
no.171 |
Page |
pp.13-17 |
#Pages |
5 |
Date of Issue |
2007-07-20 (SCE) |