Current Phase Relation of Y1Ba2Cu3O7-δ Step Edge Junction

Abstract

The small signal rf impedance of Y1Ba2-Cu3O7-δ step edge junction rf SQUIDs operating in a strongly nonhysteretic mode has been measured. The phase dependent inductance LJ(φ) and the current phase relation Ip(φ) of step-edge junctions embedded in SQUIDs are calculated from measurement data following the Vincent-Deaver approach. Two of three junctions investigated revealed a sinusoidal current phase relation. Ip (φ) of the third junction seemed to be nonsinusoidal and hysteretic. A model explaining the origin of the non-sinusoidality of Ip (φ) is proposed.

Original language	English
Pages (from-to)	2790-2793
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	5
Issue number	2
DOIs	https://doi.org/10.1109/77.403170
Publication status	Published - 1 Jan 1995
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/77.403170

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title = "Current Phase Relation of Y1Ba2Cu3O7-δ Step Edge Junction",

abstract = "The small signal rf impedance of Y1Ba2-Cu3O7-δ step edge junction rf SQUIDs operating in a strongly nonhysteretic mode has been measured. The phase dependent inductance LJ(φ) and the current phase relation Ip(φ) of step-edge junctions embedded in SQUIDs are calculated from measurement data following the Vincent-Deaver approach. Two of three junctions investigated revealed a sinusoidal current phase relation. Ip (φ) of the third junction seemed to be nonsinusoidal and hysteretic. A model explaining the origin of the non-sinusoidality of Ip (φ) is proposed.",

author = "V. Polushkin and S. Uchaikin and S. Knappe and H. Koch and B. David and D. Grundler",

year = "1995",

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T1 - Current Phase Relation of Y1Ba2Cu3O7-δ Step Edge Junction

AU - Polushkin, V.

AU - Uchaikin, S.

AU - Knappe, S.

AU - Koch, H.

AU - David, B.

AU - Grundler, D.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - The small signal rf impedance of Y1Ba2-Cu3O7-δ step edge junction rf SQUIDs operating in a strongly nonhysteretic mode has been measured. The phase dependent inductance LJ(φ) and the current phase relation Ip(φ) of step-edge junctions embedded in SQUIDs are calculated from measurement data following the Vincent-Deaver approach. Two of three junctions investigated revealed a sinusoidal current phase relation. Ip (φ) of the third junction seemed to be nonsinusoidal and hysteretic. A model explaining the origin of the non-sinusoidality of Ip (φ) is proposed.

AB - The small signal rf impedance of Y1Ba2-Cu3O7-δ step edge junction rf SQUIDs operating in a strongly nonhysteretic mode has been measured. The phase dependent inductance LJ(φ) and the current phase relation Ip(φ) of step-edge junctions embedded in SQUIDs are calculated from measurement data following the Vincent-Deaver approach. Two of three junctions investigated revealed a sinusoidal current phase relation. Ip (φ) of the third junction seemed to be nonsinusoidal and hysteretic. A model explaining the origin of the non-sinusoidality of Ip (φ) is proposed.

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