Superconductivity - Part 22-2: Normal state resistance and critical current measurement - High-<em>T</em><sub>C</sub> Josephson junction

IEC 61788-22-2:2021 is applicable to high-Tc Josephson junctions. It specifies terms, definitions, symbols and the measurement and estimation method for normal state resistance (Rn) and intrinsic critical current (Ici), based on a combination of selecting a data set from measured U–I curves with a geometric mean criterion and fitting a hyperbolic function to that data set.

Supraconductivité - Partie 22-2: Mesure de la résistance à l’état normal et du courant critique - Jonction Josephson à <em>T</em><sub>c</sub> élevée

L’IEC 61788-22-2:2021 est applicable aux jonctions Josephson à Tc élevée. Elle spécifie les termes, définitions et symboles, ainsi que la méthode de mesure et d’estimation de la résistance à l’état normal (Rn) et du courant critique intrinsèque (Ici) fondée sur l’association de la sélection d’un ensemble de données à partir des courbes U–I mesurées avec un critère de moyenne géométrique et de l’ajustement d’une fonction hyperbolique à cet ensemble de données.

General Information

Status
Published
Publication Date
20-Oct-2021
Technical Committee
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
19-Nov-2021
Completion Date
21-Oct-2021
Ref Project

Buy Standard

Standard
IEC 61788-22-2:2021 - Superconductivity - Part 22-2: Normal state resistance and critical current measurement - High-<em>T</em><sub>C</sub> Josephson junction
English and French language
71 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC 61788-22-2 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Superconductivity –
Part 22-2: Normal state resistance and critical current measurement –
High-T Josephson junction:
c
Supraconductivité –
Partie 22-2: Mesurage de la résistance à l’état normal et du courant critique –
Jonction Josephson à T élevée
c
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - IEC online collection - oc.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications. Avec un
en utilisant différents critères (numéro de référence, texte, abonnement, vous aurez toujours accès à un contenu à jour
comité d’études, …). Elle donne aussi des informations sur adapté à vos besoins.
les projets et les publications remplacées ou retirées.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au
Restez informé sur les nouvelles publications IEC. Just
monde, avec plus de 22 000 articles terminologiques en
Published détaille les nouvelles publications parues.
anglais et en français, ainsi que les termes équivalents dans
Disponible en ligne et une fois par mois par email.
16 langues additionnelles. Egalement appelé Vocabulaire

Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC 61788-22-2 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Superconductivity –
Part 22-2: Normal state resistance and critical current measurement –

High-T Josephson junction:
c
Supraconductivité –
Partie 22-2: Mesurage de la résistance à l’état normal et du courant critique –

Jonction Josephson à T élevée
c
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.050 ISBN 978-2-8322-1039-7

– 2 – IEC 61788-22-2:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols . 8
5 Principle of measurement method . 9
6 Apparatus . 9
6.1 General . 9
6.2 Cryogenic system . 9
6.3 Electrical measurement system . 10
6.4 Circuitry . 10
7 Estimation of normal state resistance (R ) and intrinsic critical current (I ) . 11
n ci
7.1 Calculation method . 11
7.2 Geometric mean criterion for hyperbolic function fitting . 12
8 Standard uncertainty . 12
8.1 General . 12
8.2 Type A uncertainty . 12
8.3 Type B uncertainty . 14
8.3.1 General . 14
8.3.2 Temperature . 14
8.3.3 Voltage measurement . 16
8.3.4 Current measurement . 16
8.4 Budget table . 17
8.5 Uncertainty requirement . 18
9 Test report . 18
9.1 Identification of test device . 18
9.2 R value . 18
n
9.3 I value . 18
ci
9.4 Standard uncertainty . 18
9.5 Atmospheric pressure . 18
9.6 Miscellaneous optional report . 18
Annex A (informative) Calculation technique and practical application to high-T
c
Josephson junctions . 20
A.1 General . 20
A.2 Hyperbolic function fitting method . 20
A.3 Geometric mean method . 21
A.4 Combined method . 22
A.5 Estimation of R , I , u and u . 23
n ci A,R A,I
A.5.1 General . 23
A.5.2 High-T Josephson junction (JL350) . 23
c
A.5.3 High-T Josephson junction (JL351) . 25
c
A.5.4 High-T Josephson junction (TUT) . 27
c
Annex B (informative) Practical application to low-T Josephson junctions . 30
c
B.1 General . 30
B.2 Estimation of R , I , u and u . 30
n ci A,R A,I
B.2.1 General . 30
B.2.2 Low-T Josephson junction (IU1) . 30
c
B.2.3 Low-T Josephson junction (IU2) . 31
c
B.2.4 Low-T Josephson junction (IU3) . 32
c
B.2.5 Low-T Josephson junction (IU4) . 34
c
Bibliography . 35

Figure 1 – Typical circuitry for voltage-current (U–I) characteristic curve measurement . 10
Figure 2 – Ideal U–I characteristic curve (red line) and hyperbolic function (RSJ) model
curve (dotted line) . 11
Figure 3 – Geometric mean criterion and RSJ model fitting for TUT-JJ05 at 75,8 K . 15
Figure 4 – Geometric mean criterion and RSJ model fitting for TUT-JJ05 at 76,3 K . 16
Figure A.1 – U–I curve based on resistively shunted junction (RSJ) model . 21
Figure A.2 – U–I curve affected by noise-rounding and self-heating . 21
Figure A.3 – Application of geometric mean method to ideal U–I in Figure A.1 . 22
Figure A.4 – Application of geometric mean method to U–I with noise-rounding and
self-heating effects in Figure A.2. 23
Figure A.5 – U–I curve of JL350 . 24
Figure A.6 – Application of geometric mean method to Figure A.5 . 24
Figure A.7 – Result of RSJ model fitting for JL350 . 25
Figure A.8 – U–I curve of JL351 . 26
Figure A.9 – Application of geometric mean method to Figure A.8 . 26
Figure A.10 – Result of RSJ model fitting for JL351 . 27
Figure A.11 – U–I curve of TUT with a small I . 28
m
Figure A.12 – Application of geometric mean method to TUT . 28
Figure A.13 – Application of adjusted geometrical mean method to TUT . 29
Figure A.14 – Result of RSJ model fitting for TUT . 29
Figure B.1 – Application of geometric mean method to IU1 .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.