Treffer: YBCO SQUIDs with unconventional current phase relation

Title:
YBCO SQUIDs with unconventional current phase relation
Authors:
BAUCH, T, JOHANSSON, J, CEDERGREN, K, LINDSTROM, T, LOMBARDI, F
Source:
Advances in Superconductivity XIX: Proceedings of the 19th International Symposium on Superconductivity (ISS 2006), Nagoya, Japan, October 30-November 1, 2006Physica. C. Superconductivity. 463-465:979-984
Publisher Information:
Amsterdam: Elsevier Science, 2007.
Publication Year:
2007
Physical Description:
print, 20 ref
Original Material:
INIST-CNRS
Subject Terms:
Crystallography, Cristallographie cristallogenèse, Electronics, Electronique, Electrical engineering, Electrotechnique, Condensed state physics, Physique de l'état condensé, Sciences exactes et technologie, Exact sciences and technology, Sciences appliquees, Applied sciences, Electronique, Electronics, Electronique des semiconducteurs. Microélectronique. Optoélectronique. Dispositifs à l'état solide, Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices, Dispositifs supraconducteurs, Superconducting devices, Application, Aplicación, Baryum oxyde, Barium oxide, Bario óxido, Courant critique, Critical current, Corriente crítica, Cuivre oxyde, Copper oxide, Cobre óxido, Dispositif SQUID, SQUID devices, Effet Josephson, Josephson effect, Efecto Josephson, Effet champ magnétique, Magnetic field effect, Efecto campo magnético, Information quantique, Quantum information, Información cuántica, Paramètre ordre, Order parameter, Parámetro orden, Simulation numérique, Numerical simulation, Simulación numérica, Supraconducteur haute température, High temperature superconductor, Supraconductor alta temperatura, Traitement information, Information processing, Procesamiento información, Yttrium oxyde, Yttrium oxide, Ytrio óxido, YBa2Cu3O7-δ, 85.25.Cp, High-temperature superconductors; Josephson junctions; SQUIDs; Superconducting devices; YBa2Cu3O7-δ (YBCO)
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Quantum Device Physics Laboratory, Department of Micro technology and Nanoscience, MC2, Chalmers University of Technology, 41296 Goteborg, Sweden
National Physical Laboratory, Teddington, Middlesex TW11 OLW, United Kingdom
ISSN:
0921-4534
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=19153506
Rights:
Copyright 2007 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Electronics
Accession Number:
edscal.19153506
Database:
PASCAL Archive

Weitere Informationen

We have studied the dynamics of YBa2Cu3O7-δ (YBCO) dc sperconducting quantum interference devices (SQUIDs) characterized by an unconventional Josephson current phase relation (CPR). We have focused on SQUID configurations with Josephson junctions where the lobe of the order parameter in one electrode is facing a node in the other electrode. This order parameter arrangement should enhance the appearance of a sin(2<p) term in the CPR. The response of the critical current of the dc SQUID, under the effect of an external magnetic field, has been measured in temperature, down to 20 mK. Our experimental data have been compared with numerical simulations of the SQUIDs dynamics by considering a CPR of a single junction of the form I(φ) = II sin(φ) - III sin(2φ) where II and III are, respectively, the first and second harmonic component. In our devices the values of the sin(2φ) term are such that the fundamental state of the SQUID is naturally double degenerate. This is of great relevance for applications of d-wave SQUIDs in quantum information processing.