Little-Parks oscillations in superconducting ring with Josephson junctions

Omri J. Sharon; Amos Sharoni; Jorge Berger; Avner Shaulov; Yosi Yeshurun

doi:10.1088/1742-6596/969/1/012047

Little-Parks oscillations in superconducting ring with Josephson junctions

Omri J. Sharon, Amos Sharoni, Jorge Berger, Avner Shaulov, Yosi Yeshurun

ORT Braude - College of Engineering

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

Nb nano-rings connected serially by Nb wires exhibit, at low bias currents, the typical parabolic Little-Parks magnetoresistance oscillations. As the bias current increases, these oscillations become sinusoidal. This result is ascribed to the generation of Josephson junctions caused by the combined effect of current-induced phase slips and the non-uniformity of the order parameter along each ring due to the Nb wires attached to it. This interpretation is validated by further increasing the bias current, which results in magnetoresistance oscillations typical of a SQUID.

Original language	English
Article number	012047
Journal	Journal of Physics: Conference Series
Volume	969
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/969/1/012047
State	Published - 19 Apr 2018
Event	28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden Duration: 9 Aug 2017 → 16 Aug 2017

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

Funding

This research was supported by a Grant from the GIF, the German-Israeli Foundation for Scientific Research and Development.

Funders	Funder number
German-Israeli Foundation for Scientific Research and Development

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10.1088/1742-6596/969/1/012047

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title = "Little-Parks oscillations in superconducting ring with Josephson junctions",

abstract = "Nb nano-rings connected serially by Nb wires exhibit, at low bias currents, the typical parabolic Little-Parks magnetoresistance oscillations. As the bias current increases, these oscillations become sinusoidal. This result is ascribed to the generation of Josephson junctions caused by the combined effect of current-induced phase slips and the non-uniformity of the order parameter along each ring due to the Nb wires attached to it. This interpretation is validated by further increasing the bias current, which results in magnetoresistance oscillations typical of a SQUID.",

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AU - Sharon, Omri J.

AU - Sharoni, Amos

AU - Berger, Jorge

AU - Shaulov, Avner

AU - Yeshurun, Yosi

PY - 2018/4/19

Y1 - 2018/4/19

N2 - Nb nano-rings connected serially by Nb wires exhibit, at low bias currents, the typical parabolic Little-Parks magnetoresistance oscillations. As the bias current increases, these oscillations become sinusoidal. This result is ascribed to the generation of Josephson junctions caused by the combined effect of current-induced phase slips and the non-uniformity of the order parameter along each ring due to the Nb wires attached to it. This interpretation is validated by further increasing the bias current, which results in magnetoresistance oscillations typical of a SQUID.

AB - Nb nano-rings connected serially by Nb wires exhibit, at low bias currents, the typical parabolic Little-Parks magnetoresistance oscillations. As the bias current increases, these oscillations become sinusoidal. This result is ascribed to the generation of Josephson junctions caused by the combined effect of current-induced phase slips and the non-uniformity of the order parameter along each ring due to the Nb wires attached to it. This interpretation is validated by further increasing the bias current, which results in magnetoresistance oscillations typical of a SQUID.

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T2 - 28th International Conference on Low Temperature Physics, LT 2018

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Little-Parks oscillations in superconducting ring with Josephson junctions

Abstract

Bibliographical note

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