Instabilities and chaotic solutions of the current biased dc superconducting quantum interference device

J. A. Ketoja, J. Kurkijärvi, R. K. Ritala

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

The equations of motion of the symmetrical dc superconducting quantum interference device (SQUID) are numerically investigated with a 16-term Taylor-expansion routine. The coherent phase or single-junction state is found to be unstable in large regions of the phase space including areas of interest in magnetometer design. The stability problem is discussed analytically in terms of the Hill equation. Feigenbaum sequences to chaos are found at borders of stability of various types of solution. Some of these, at finite external fluxes, occur at quite physical values of SQUID parameters.

Original languageEnglish
Pages (from-to)3757-3764
Number of pages8
JournalPhysical Review B
Volume30
Issue number7
DOIs
Publication statusPublished - 1 Jan 1984
MoE publication typeNot Eligible

Fingerprint

SQUIDs
interference
Magnetometers
borders
Chaos theory
magnetometers
Equations of motion
chaos
equations of motion
Fluxes
expansion

Cite this

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Instabilities and chaotic solutions of the current biased dc superconducting quantum interference device. / Ketoja, J. A.; Kurkijärvi, J.; Ritala, R. K.

In: Physical Review B, Vol. 30, No. 7, 01.01.1984, p. 3757-3764.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Ritala, R. K.

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